11651131420164 has 60 divisors (see below), whose sum is σ = 30461933194000. Its totient is φ = 3883254730992.

The previous prime is 11651131420111. The next prime is 11651131420207. The reversal of 11651131420164 is 46102413115611.

11651131420164 is a `hidden beast` number, since 1 + 1 + 65 + 1 + 13 + 1 + 420 + 164 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 660987 + ... + 4872285.

Almost surely, 2^{11651131420164} is an apocalyptic number.

It is an amenable number.

11651131420164 is an abundant number, since it is smaller than the sum of its proper divisors (18810801773836).

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

11651131420164 is a wasteful number, since it uses less digits than its factorization.

11651131420164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4219854 (or 4219843 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 36.

Adding to 11651131420164 its reverse (46102413115611), we get a palindrome (57753544535775).

The spelling of 11651131420164 in words is "eleven trillion, six hundred fifty-one billion, one hundred thirty-one million, four hundred twenty thousand, one hundred sixty-four".