22615520155 has 48 divisors (see below), whose sum is σ = 30168423360. Its totient is φ = 16241246208.

The previous prime is 22615520149. The next prime is 22615520177. The reversal of 22615520155 is 55102551622.

It is a de Polignac number, because none of the positive numbers 2^k-22615520155 is a prime.

It is a super-2 number, since 2×22615520155² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 22615520155.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 15187651 + ... + 15189139.

It is an arithmetic number, because the mean of its divisors is an integer number (628508820).

Almost surely, 2^22615520155 is an apocalyptic number.

22615520155 is a deficient number, since it is larger than the sum of its proper divisors (7552903205).

22615520155 is a wasteful number, since it uses less digits than its factorization.

22615520155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2008 (or 1991 counting only the distinct ones).

The product of its (nonzero) digits is 30000, while the sum is 34.

The spelling of 22615520155 in words is "twenty-two billion, six hundred fifteen million, five hundred twenty thousand, one hundred fifty-five".