11956455522 has 150 divisors (see below), whose sum is σ = 29891185995. Its totient is φ = 3572137800.

The previous prime is 11956455499. The next prime is 11956455529. The reversal of 11956455522 is 22555465911.

11956455522 is a `hidden beast` number, since 1 + 1 + 9 + 56 + 45 + 552 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 5978227761 + 5978227761 = 77319^2 + 77319^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=77319.

Its product of digits (540000) is a multiple of the sum of its prime factors (200).

It is not an unprimeable number, because it can be changed into a prime (11956455529) by changing a digit.

It is a polite number, since it can be written in 74 ways as a sum of consecutive naturals, for example, 168400747 + ... + 168400817.

Almost surely, 2^11956455522 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11956455522

11956455522 is an abundant number, since it is smaller than the sum of its proper divisors (17934730473).

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

11956455522 is an frugal number, since it uses more digits than its factorization.

11956455522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200 (or 87 counting only the distinct ones).

The product of its digits is 540000, while the sum is 45.

The spelling of 11956455522 in words is "eleven billion, nine hundred fifty-six million, four hundred fifty-five thousand, five hundred twenty-two".