10161561522 has 32 divisors (see below), whose sum is σ = 23232339072. Its totient is φ = 2902564224.

The previous prime is 10161561497. The next prime is 10161561523. The reversal of 10161561522 is 22516516101.

It is a self number, because there is not a number n which added to its sum of digits gives 10161561522.

It is not an unprimeable number, because it can be changed into a prime (10161561523) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 148428 + ... + 205800.

It is an arithmetic number, because the mean of its divisors is an integer number (726010596).

Almost surely, 2^10161561522 is an apocalyptic number.

10161561522 is an abundant number, since it is smaller than the sum of its proper divisors (13070777550).

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

10161561522 is a wasteful number, since it uses less digits than its factorization.

10161561522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61602.

The product of its (nonzero) digits is 3600, while the sum is 30.

The spelling of 10161561522 in words is "ten billion, one hundred sixty-one million, five hundred sixty-one thousand, five hundred twenty-two".