64622140551 has 16 divisors (see below), whose sum is σ = 95766392800. Its totient is φ = 43067977344.

The previous prime is 64622140481. The next prime is 64622140571. The reversal of 64622140551 is 15504122646.

64622140551 is a `hidden beast` number, since 6 + 4 + 62 + 2 + 1 + 40 + 551 = 666.

It is not a de Polignac number, because 64622140551 - 2¹⁵ = 64622107783 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64622140571) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 285136 + ... + 458853.

It is an arithmetic number, because the mean of its divisors is an integer number (5985399550).

Almost surely, 2^64622140551 is an apocalyptic number.

64622140551 is a deficient number, since it is larger than the sum of its proper divisors (31144252249).

64622140551 is a wasteful number, since it uses less digits than its factorization.

64622140551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 747215 (or 747209 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 36.

The spelling of 64622140551 in words is "sixty-four billion, six hundred twenty-two million, one hundred forty thousand, five hundred fifty-one".