64751086141440 has 544 divisors, whose sum is σ = 214374140829696. Its totient is φ = 16671823626240.

The previous prime is 64751086141403. The next prime is 64751086141459. The reversal of 64751086141440 is 4414168015746.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14840952699 + ... + 14840957061.

Almost surely, 2^{64751086141440} is an apocalyptic number.

64751086141440 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 64751086141440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (107187070414848).

64751086141440 is an abundant number, since it is smaller than the sum of its proper divisors (149623054688256).

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

64751086141440 is an equidigital number, since it uses as much as digits as its factorization.

64751086141440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4921 (or 4891 counting only the distinct ones).

The product of its (nonzero) digits is 2580480, while the sum is 51.

The spelling of 64751086141440 in words is "sixty-four trillion, seven hundred fifty-one billion, eighty-six million, one hundred forty-one thousand, four hundred forty".