64298887741440 has 1088 divisors, whose sum is σ = 250861086028800. Its totient is φ = 15496327987200.

The previous prime is 64298887741411. The next prime is 64298887741477. The reversal of 64298887741440 is 4414778889246.

64298887741440 is a `hidden beast` number, since 6 + 4 + 2 + 98 + 8 + 87 + 7 + 414 + 40 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

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, 17420449995 + ... + 17420453685.

Almost surely, 2^{64298887741440} is an apocalyptic number.

64298887741440 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64298887741440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (125430543014400).

64298887741440 is an abundant number, since it is smaller than the sum of its proper divisors (186562198287360).

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

64298887741440 is a wasteful number, since it uses less digits than its factorization.

64298887741440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3927 (or 3891 counting only the distinct ones).

The product of its (nonzero) digits is 693633024, while the sum is 72.

The spelling of 64298887741440 in words is "sixty-four trillion, two hundred ninety-eight billion, eight hundred eighty-seven million, seven hundred forty-one thousand, four hundred forty".