164372500978 has 16 divisors (see below), whose sum is σ = 296612032320. Its totient is φ = 66737707056.

The previous prime is 164372500969. The next prime is 164372500993. The reversal of 164372500978 is 879005273461.

164372500978 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×164372500978² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 308970601 + ... + 308971132.

It is an arithmetic number, because the mean of its divisors is an integer number (18538252020).

It is a 2-persistent number, because it is pandigital, and so is 2⋅164372500978 = 328745001956, but 3⋅164372500978 = 493117502934 is not.

Almost surely, 2^164372500978 is an apocalyptic number.

164372500978 is a deficient number, since it is larger than the sum of its proper divisors (132239531342).

164372500978 is a wasteful number, since it uses less digits than its factorization.

164372500978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 617941761.

The product of its (nonzero) digits is 2540160, while the sum is 52.

The spelling of 164372500978 in words is "one hundred sixty-four billion, three hundred seventy-two million, five hundred thousand, nine hundred seventy-eight".