64249837052 has 6 divisors (see below), whose sum is σ = 112437214848. Its totient is φ = 32124918524.

The previous prime is 64249837031. The next prime is 64249837063. The reversal of 64249837052 is 25073894246.

It is a super-2 number, since 2×64249837052² (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, 8031229628 + ... + 8031229635.

It is an arithmetic number, because the mean of its divisors is an integer number (18739535808).

Almost surely, 2^64249837052 is an apocalyptic number.

It is an amenable number.

64249837052 is a deficient number, since it is larger than the sum of its proper divisors (48187377796).

64249837052 is a wasteful number, since it uses less digits than its factorization.

64249837052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16062459267 (or 16062459265 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 50.

The spelling of 64249837052 in words is "sixty-four billion, two hundred forty-nine million, eight hundred thirty-seven thousand, fifty-two".