64506036464 has 10 divisors (see below), whose sum is σ = 124980445680. Its totient is φ = 32253018224.

The previous prime is 64506036457. The next prime is 64506036493. The reversal of 64506036464 is 46463060546.

It is a happy number.

It is a super-2 number, since 2×64506036464² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2015813624 + ... + 2015813655.

It is an arithmetic number, because the mean of its divisors is an integer number (12498044568).

Almost surely, 2^64506036464 is an apocalyptic number.

It is an amenable number.

64506036464 is a deficient number, since it is larger than the sum of its proper divisors (60474409216).

64506036464 is a wasteful number, since it uses less digits than its factorization.

64506036464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4031627287 (or 4031627281 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 44.

The spelling of 64506036464 in words is "sixty-four billion, five hundred six million, thirty-six thousand, four hundred sixty-four".