79773809351040 has 1792 divisors, whose sum is σ = 331378310736000. Its totient is φ = 17979254636544.

The previous prime is 79773809351011. The next prime is 79773809351099. The reversal of 79773809351040 is 4015390837797.

79773809351040 is a `hidden beast` number, since 7 + 9 + 7 + 73 + 8 + 0 + 9 + 3 + 510 + 40 = 666.

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 223 ways as a sum of consecutive naturals, for example, 98607922156 + ... + 98607922964.

Almost surely, 2^{79773809351040} is an apocalyptic number.

79773809351040 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 79773809351040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (165689155368000).

79773809351040 is an abundant number, since it is smaller than the sum of its proper divisors (251604501384960).

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

79773809351040 is a wasteful number, since it uses less digits than its factorization.

79773809351040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1239 (or 1212 counting only the distinct ones).

The product of its (nonzero) digits is 40007520, while the sum is 63.

The spelling of 79773809351040 in words is "seventy-nine trillion, seven hundred seventy-three billion, eight hundred nine million, three hundred fifty-one thousand, forty".