21150164051164 has 12 divisors (see below), whose sum is σ = 37073763678784. Its totient is φ = 10557660142944.

The previous prime is 21150164051153. The next prime is 21150164051167. The reversal of 21150164051164 is 46115046105112.

It is a super-2 number, since 2×21150164051164² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21150164051167) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4355467929 + ... + 4355472784.

Almost surely, 2^{21150164051164} is an apocalyptic number.

It is an amenable number.

21150164051164 is a deficient number, since it is larger than the sum of its proper divisors (15923599627620).

21150164051164 is a wasteful number, since it uses less digits than its factorization.

21150164051164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8710941324 (or 8710941322 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 37.

The spelling of 21150164051164 in words is "twenty-one trillion, one hundred fifty billion, one hundred sixty-four million, fifty-one thousand, one hundred sixty-four".