64515163654 has 8 divisors (see below), whose sum is σ = 96786940968. Its totient is φ = 32252850000.

The previous prime is 64515163621. The next prime is 64515163663. The reversal of 64515163654 is 45636151546.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2348847 + ... + 2376154.

It is an arithmetic number, because the mean of its divisors is an integer number (12098367621).

Almost surely, 2^64515163654 is an apocalyptic number.

64515163654 is a deficient number, since it is larger than the sum of its proper divisors (32271777314).

64515163654 is a wasteful number, since it uses less digits than its factorization.

64515163654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4731830.

The product of its digits is 1296000, while the sum is 46.

The spelling of 64515163654 in words is "sixty-four billion, five hundred fifteen million, one hundred sixty-three thousand, six hundred fifty-four".