11957353684 has 6 divisors (see below), whose sum is σ = 20925368954. Its totient is φ = 5978676840.

The previous prime is 11957353673. The next prime is 11957353687. The reversal of 11957353684 is 48635375911.

It can be written as a sum of positive squares in only one way, i.e., 10810176784 + 1147176900 = 103972^2 + 33870^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11957353687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1494669207 + ... + 1494669214.

Almost surely, 2^11957353684 is an apocalyptic number.

It is an amenable number.

11957353684 is a deficient number, since it is larger than the sum of its proper divisors (8968015270).

11957353684 is a wasteful number, since it uses less digits than its factorization.

11957353684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2989338425 (or 2989338423 counting only the distinct ones).

The product of its digits is 2721600, while the sum is 52.

The spelling of 11957353684 in words is "eleven billion, nine hundred fifty-seven million, three hundred fifty-three thousand, six hundred eighty-four".