64506632154 has 16 divisors (see below), whose sum is σ = 133461997920. Its totient is φ = 20760755120.

The previous prime is 64506632149. The next prime is 64506632171. The reversal of 64506632154 is 45123660546.

It is a super-2 number, since 2×64506632154² (a number of 22 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, 185363712 + ... + 185364059.

It is an arithmetic number, because the mean of its divisors is an integer number (8341374870).

Almost surely, 2^64506632154 is an apocalyptic number.

64506632154 is an abundant number, since it is smaller than the sum of its proper divisors (68955365766).

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

64506632154 is a wasteful number, since it uses less digits than its factorization.

64506632154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 370727805.

The product of its (nonzero) digits is 518400, while the sum is 42.

The spelling of 64506632154 in words is "sixty-four billion, five hundred six million, six hundred thirty-two thousand, one hundred fifty-four".