11946354957 has 16 divisors (see below), whose sum is σ = 17922336000. Its totient is φ = 7863422112.

The previous prime is 11946354929. The next prime is 11946354977. The reversal of 11946354957 is 75945364911.

11946354957 is a `hidden beast` number, since 1 + 1 + 9 + 46 + 3 + 549 + 57 = 666.

It is not a de Polignac number, because 11946354957 - 2⁸ = 11946354701 is a prime.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11946354977) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2798232 + ... + 2802497.

It is an arithmetic number, because the mean of its divisors is an integer number (1120146000).

Almost surely, 2^11946354957 is an apocalyptic number.

It is an amenable number.

11946354957 is a deficient number, since it is larger than the sum of its proper divisors (5975981043).

11946354957 is an equidigital number, since it uses as much as digits as its factorization.

11946354957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5600817 (or 5600811 counting only the distinct ones).

The product of its digits is 4082400, while the sum is 54.

The spelling of 11946354957 in words is "eleven billion, nine hundred forty-six million, three hundred fifty-four thousand, nine hundred fifty-seven".