64490500445 has 16 divisors (see below), whose sum is σ = 88449902208. Its totient is φ = 44219163840.

The previous prime is 64490500439. The next prime is 64490500489. The reversal of 64490500445 is 54400509446.

It is not a de Polignac number, because 64490500445 - 2¹⁴ = 64490484061 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 577190 + ... + 679800.

It is an arithmetic number, because the mean of its divisors is an integer number (5528118888).

Almost surely, 2^64490500445 is an apocalyptic number.

It is an amenable number.

64490500445 is a deficient number, since it is larger than the sum of its proper divisors (23959401763).

64490500445 is a wasteful number, since it uses less digits than its factorization.

64490500445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120580.

The product of its (nonzero) digits is 345600, while the sum is 41.

The spelling of 64490500445 in words is "sixty-four billion, four hundred ninety million, five hundred thousand, four hundred forty-five".