79143497072640 has 4096 divisors, whose sum is σ = 385321137868800. Its totient is φ = 14880551731200.

The previous prime is 79143497072611. The next prime is 79143497072743. The reversal of 79143497072640 is 4627079434197.

79143497072640 is a `hidden beast` number, since 7 + 9 + 1 + 434 + 9 + 70 + 72 + 64 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (4096).

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 270114324334 + ... + 270114324626.

It is an arithmetic number, because the mean of its divisors is an integer number (94072543425).

Almost surely, 2^{79143497072640} is an apocalyptic number.

79143497072640 is a gapful number since it is divisible by the number (70) 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 79143497072640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (192660568934400).

79143497072640 is an abundant number, since it is smaller than the sum of its proper divisors (306177640796160).

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

79143497072640 is a wasteful number, since it uses less digits than its factorization.

79143497072640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 429 (or 395 counting only the distinct ones).

The product of its (nonzero) digits is 64012032, while the sum is 63.

The spelling of 79143497072640 in words is "seventy-nine trillion, one hundred forty-three billion, four hundred ninety-seven million, seventy-two thousand, six hundred forty".