64506153215 has 64 divisors (see below), whose sum is σ = 92366438400. Its totient is φ = 42335070336.

The previous prime is 64506153197. The next prime is 64506153289. The reversal of 64506153215 is 51235160546.

It is a cyclic number.

It is not a de Polignac number, because 64506153215 - 2³⁰ = 63432411391 is a prime.

It is a super-2 number, since 2×64506153215² (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 in 63 ways as a sum of consecutive naturals, for example, 13902866 + ... + 13907504.

It is an arithmetic number, because the mean of its divisors is an integer number (1443225600).

Almost surely, 2^64506153215 is an apocalyptic number.

64506153215 is a deficient number, since it is larger than the sum of its proper divisors (27860285185).

64506153215 is a wasteful number, since it uses less digits than its factorization.

64506153215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4884.

The product of its (nonzero) digits is 108000, while the sum is 38.

The spelling of 64506153215 in words is "sixty-four billion, five hundred six million, one hundred fifty-three thousand, two hundred fifteen".