11956997335080 has 128 divisors (see below), whose sum is σ = 41000542156800. Its totient is φ = 2732686447872.

The previous prime is 11956997335061. The next prime is 11956997335091. The reversal of 11956997335080 is 8053379965911.

It is a super-2 number, since 2×11956997335080² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5867419 + ... + 7638101.

It is an arithmetic number, because the mean of its divisors is an integer number (320316735600).

Almost surely, 2^{11956997335080} is an apocalyptic number.

11956997335080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11956997335080 is an abundant number, since it is smaller than the sum of its proper divisors (29043544821720).

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

11956997335080 is a wasteful number, since it uses less digits than its factorization.

11956997335080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1778743 (or 1778739 counting only the distinct ones).

The product of its (nonzero) digits is 55112400, while the sum is 66.

The spelling of 11956997335080 in words is "eleven trillion, nine hundred fifty-six billion, nine hundred ninety-seven million, three hundred thirty-five thousand, eighty".