105156506615651 has 4 divisors (see below), whose sum is σ = 105171748905000. Its totient is φ = 105141264326304.

The previous prime is 105156506615623. The next prime is 105156506615663. The reversal of 105156506615651 is 156516605651501.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-105156506615651 is a prime.

It is a super-2 number, since 2×105156506615651² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 105156506615593 and 105156506615602.

It is not an unprimeable number, because it can be changed into a prime (105156506615681) 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, 7621134326 + ... + 7621148123.

It is an arithmetic number, because the mean of its divisors is an integer number (26292937226250).

Almost surely, 2^{105156506615651} is an apocalyptic number.

105156506615651 is a deficient number, since it is larger than the sum of its proper divisors (15242289349).

105156506615651 is an equidigital number, since it uses as much as digits as its factorization.

105156506615651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15242289348.

The product of its (nonzero) digits is 4050000, while the sum is 53.

The spelling of 105156506615651 in words is "one hundred five trillion, one hundred fifty-six billion, five hundred six million, six hundred fifteen thousand, six hundred fifty-one".