64611620264445 has 16 divisors (see below), whose sum is σ = 103710999480192. Its totient is φ = 34348728455360.

The previous prime is 64611620264407. The next prime is 64611620264467. The reversal of 64611620264445 is 54446202611646.

It is not a de Polignac number, because 64611620264445 - 2⁶ = 64611620264381 is a prime.

It is a super-2 number, since 2×64611620264445² (a number of 28 digits) contains 22 as substring.

It is a Curzon 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, 6925142202 + ... + 6925151531.

It is an arithmetic number, because the mean of its divisors is an integer number (6481937467512).

Almost surely, 2^{64611620264445} is an apocalyptic number.

It is an amenable number.

64611620264445 is a deficient number, since it is larger than the sum of its proper divisors (39099379215747).

64611620264445 is a wasteful number, since it uses less digits than its factorization.

64611620264445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13850294052.

The product of its (nonzero) digits is 6635520, while the sum is 51.

The spelling of 64611620264445 in words is "sixty-four trillion, six hundred eleven billion, six hundred twenty million, two hundred sixty-four thousand, four hundred forty-five".