64662434398 has 4 divisors (see below), whose sum is σ = 96993651600. Its totient is φ = 32331217198.

The previous prime is 64662434359. The next prime is 64662434443. The reversal of 64662434398 is 89343426646.

It is a semiprime because it is the product of two primes.

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, 16165608598 + ... + 16165608601.

It is an arithmetic number, because the mean of its divisors is an integer number (24248412900).

Almost surely, 2^64662434398 is an apocalyptic number.

64662434398 is a deficient number, since it is larger than the sum of its proper divisors (32331217202).

64662434398 is a wasteful number, since it uses less digits than its factorization.

64662434398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32331217201.

The product of its digits is 17915904, while the sum is 55.

The spelling of 64662434398 in words is "sixty-four billion, six hundred sixty-two million, four hundred thirty-four thousand, three hundred ninety-eight".