11961775502 has 16 divisors (see below), whose sum is σ = 18415633824. Its totient is φ = 5823792000.

The previous prime is 11961775487. The next prime is 11961775519. The reversal of 11961775502 is 20557716911.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 97274 + ... + 182717.

It is an arithmetic number, because the mean of its divisors is an integer number (1150977114).

Almost surely, 2^11961775502 is an apocalyptic number.

11961775502 is a deficient number, since it is larger than the sum of its proper divisors (6453858322).

11961775502 is a wasteful number, since it uses less digits than its factorization.

11961775502 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280555.

The product of its (nonzero) digits is 132300, while the sum is 44.

The spelling of 11961775502 in words is "eleven billion, nine hundred sixty-one million, seven hundred seventy-five thousand, five hundred two".