11956865494 has 32 divisors (see below), whose sum is σ = 20790452736. Its totient is φ = 5051211840.

The previous prime is 11956865461. The next prime is 11956865533. The reversal of 11956865494 is 49456865911.

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, 3255279 + ... + 3258949.

It is an arithmetic number, because the mean of its divisors is an integer number (649701648).

Almost surely, 2^11956865494 is an apocalyptic number.

11956865494 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

11956865494 is a deficient number, since it is larger than the sum of its proper divisors (8833587242).

11956865494 is a wasteful number, since it uses less digits than its factorization.

11956865494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6940.

The product of its digits is 9331200, while the sum is 58.

The spelling of 11956865494 in words is "eleven billion, nine hundred fifty-six million, eight hundred sixty-five thousand, four hundred ninety-four".