75815779995276 has 144 divisors (see below), whose sum is σ = 188803954569216. Its totient is φ = 23673720139776.

The previous prime is 75815779995251. The next prime is 75815779995313. The reversal of 75815779995276 is 67259997751857.

It is a junction number, because it is equal to n+sod(n) for n = 75815779995192 and 75815779995201.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5828837965 + ... + 5828850971.

Almost surely, 2^{75815779995276} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 75815779995276, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94401977284608).

75815779995276 is an abundant number, since it is smaller than the sum of its proper divisors (112988174573940).

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

75815779995276 is a wasteful number, since it uses less digits than its factorization.

75815779995276 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20808 (or 20789 counting only the distinct ones).

The product of its digits is 21003948000, while the sum is 87.

The spelling of 75815779995276 in words is "seventy-five trillion, eight hundred fifteen billion, seven hundred seventy-nine million, nine hundred ninety-five thousand, two hundred seventy-six".