Search a number
-
+
2115388502153 = 20728710205119
BaseRepresentation
bin11110110010000110111…
…110101111000010001001
321111020012001200002122222
4132302012332233002021
5234124303424032103
64255443541023425
7305555204406233
oct36620676570211
97436161602588
102115388502153
11746149730363
122a1b873b4b75
13124632236b94
1474557585253
153a05d1bd638
hex1ec86faf089

2115388502153 has 4 divisors (see below), whose sum is σ = 2115398914560. Its totient is φ = 2115378089748.

The previous prime is 2115388502147. The next prime is 2115388502179. The reversal of 2115388502153 is 3512058835112.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2115388502153 - 24 = 2115388502137 is a prime.

It is a super-2 number, since 2×21153885021532 (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2115388501153) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4895273 + ... + 5309846.

It is an arithmetic number, because the mean of its divisors is an integer number (528849728640).

Almost surely, 22115388502153 is an apocalyptic number.

It is an amenable number.

2115388502153 is a deficient number, since it is larger than the sum of its proper divisors (10412407).

2115388502153 is a wasteful number, since it uses less digits than its factorization.

2115388502153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10412406.

The product of its (nonzero) digits is 288000, while the sum is 44.

The spelling of 2115388502153 in words is "two trillion, one hundred fifteen billion, three hundred eighty-eight million, five hundred two thousand, one hundred fifty-three".

Divisors: 1 207287 10205119 2115388502153