64249313615040 has 112 divisors (see below), whose sum is σ = 215991074943072. Its totient is φ = 16125317922816.

The previous prime is 64249313614987. The next prime is 64249313615051. The reversal of 64249313615040 is 4051631394246.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1968406279 + ... + 1968438918.

Almost surely, 2^{64249313615040} is an apocalyptic number.

64249313615040 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

64249313615040 is an abundant number, since it is smaller than the sum of its proper divisors (151741761328032).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64249313615040 is a wasteful number, since it uses less digits than its factorization.

64249313615040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3936845234 (or 3936845224 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 48.

The spelling of 64249313615040 in words is "sixty-four trillion, two hundred forty-nine billion, three hundred thirteen million, six hundred fifteen thousand, forty".