Search a number
-
+
815203553964 = 22367933629497
BaseRepresentation
bin10111101110011011110…
…10110001001010101100
32212221011221022022012220
423313031322301022230
5101324014102211324
61422255505155340
7112616334610152
oct13671572611254
92787157268186
10815203553964
112947a9176928
12111baa02bb50
135bb47a25557
142b6556153d2
1516312e13b79
hexbdcdeb12ac

815203553964 has 12 divisors (see below), whose sum is σ = 1902141625944. Its totient is φ = 271734517984.

The previous prime is 815203553953. The next prime is 815203553993. The reversal of 815203553964 is 469355302518.

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

It is a super-2 number, since 2×8152035539642 (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33966814737 + ... + 33966814760.

It is an arithmetic number, because the mean of its divisors is an integer number (158511802162).

Almost surely, 2815203553964 is an apocalyptic number.

It is an amenable number.

815203553964 is an abundant number, since it is smaller than the sum of its proper divisors (1086938071980).

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

815203553964 is a wasteful number, since it uses less digits than its factorization.

815203553964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67933629504 (or 67933629502 counting only the distinct ones).

The product of its (nonzero) digits is 3888000, while the sum is 51.

The spelling of 815203553964 in words is "eight hundred fifteen billion, two hundred three million, five hundred fifty-three thousand, nine hundred sixty-four".

Divisors: 1 2 3 4 6 12 67933629497 135867258994 203800888491 271734517988 407601776982 815203553964