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15131101044 = 2231260925087
BaseRepresentation
bin11100001011110001…
…00100011101110100
31110001111211120111210
432011320210131310
5221442030213134
610541240001420
71043651144133
oct160570443564
943044746453
1015131101044
116465126194
122b23460270
131571a5ba37
14a377cd91a
155d85ae2e9
hex385e24774

15131101044 has 12 divisors (see below), whose sum is σ = 35305902464. Its totient is φ = 5043700344.

The previous prime is 15131101031. The next prime is 15131101067. The reversal of 15131101044 is 44010113151.

15131101044 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 15131101044.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 630462532 + ... + 630462555.

Almost surely, 215131101044 is an apocalyptic number.

It is an amenable number.

15131101044 is an abundant number, since it is smaller than the sum of its proper divisors (20174801420).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

15131101044 is a wasteful number, since it uses less digits than its factorization.

15131101044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1260925094 (or 1260925092 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 21.

Adding to 15131101044 its reverse (44010113151), we get a palindrome (59141214195).

The spelling of 15131101044 in words is "fifteen billion, one hundred thirty-one million, one hundred one thousand, forty-four".

Divisors: 1 2 3 4 6 12 1260925087 2521850174 3782775261 5043700348 7565550522 15131101044