11953977056 has 96 divisors (see below), whose sum is σ = 27965129472. Its totient is φ = 4923325440.

The previous prime is 11953977047. The next prime is 11953977073. The reversal of 11953977056 is 65077935911.

It is a junction number, because it is equal to n+sod(n) for n = 11953976989 and 11953977007.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 605615 + ... + 625041.

It is an arithmetic number, because the mean of its divisors is an integer number (291303432).

Almost surely, 2^11953977056 is an apocalyptic number.

11953977056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11953977056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13982564736).

11953977056 is an abundant number, since it is smaller than the sum of its proper divisors (16011152416).

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

11953977056 is a wasteful number, since it uses less digits than its factorization.

11953977056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19552 (or 19544 counting only the distinct ones).

The product of its (nonzero) digits is 1786050, while the sum is 53.

The spelling of 11953977056 in words is "eleven billion, nine hundred fifty-three million, nine hundred seventy-seven thousand, fifty-six".