76721791458 has 16 divisors (see below), whose sum is σ = 165246935616. Its totient is φ = 23606705040.

The previous prime is 76721791451. The next prime is 76721791459. The reversal of 76721791458 is 85419712767.

It is a junction number, because it is equal to n+sod(n) for n = 76721791398 and 76721791407.

It is not an unprimeable number, because it can be changed into a prime (76721791451) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 491806278 + ... + 491806433.

It is an arithmetic number, because the mean of its divisors is an integer number (10327933476).

Almost surely, 2^76721791458 is an apocalyptic number.

76721791458 is a gapful number since it is divisible by the number (78) formed by its first and last digit.

76721791458 is an abundant number, since it is smaller than the sum of its proper divisors (88525144158).

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

76721791458 is a wasteful number, since it uses less digits than its factorization.

76721791458 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 983612729.

The product of its digits is 5927040, while the sum is 57.

The spelling of 76721791458 in words is "seventy-six billion, seven hundred twenty-one million, seven hundred ninety-one thousand, four hundred fifty-eight".