79324539840 has 1792 divisors, whose sum is σ = 368686080000. Its totient is φ = 15931883520.

The previous prime is 79324539799. The next prime is 79324539887. The reversal of 79324539840 is 4893542397.

79324539840 is a `hidden beast` number, since 7 + 9 + 3 + 24 + 539 + 84 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

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, 1117247005 + ... + 1117247075.

It is an arithmetic number, because the mean of its divisors is an integer number (205740000).

Almost surely, 2^79324539840 is an apocalyptic number.

79324539840 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 79324539840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (184343040000).

79324539840 is an abundant number, since it is smaller than the sum of its proper divisors (289361540160).

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

79324539840 is a wasteful number, since it uses less digits than its factorization.

79324539840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160 (or 130 counting only the distinct ones).

The product of its (nonzero) digits is 6531840, while the sum is 54.

The spelling of 79324539840 in words is "seventy-nine billion, three hundred twenty-four million, five hundred thirty-nine thousand, eight hundred forty".