76499810640 has 800 divisors, whose sum is σ = 301949424000. Its totient is φ = 17786419200.

The previous prime is 76499810633. The next prime is 76499810659. The reversal of 76499810640 is 4601899467.

76499810640 is a `hidden beast` number, since 7 + 6 + 499 + 8 + 106 + 40 = 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 159 ways as a sum of consecutive naturals, for example, 1296606931 + ... + 1296606989.

It is an arithmetic number, because the mean of its divisors is an integer number (377436780).

Almost surely, 2^76499810640 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 76499810640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (150974712000).

76499810640 is an abundant number, since it is smaller than the sum of its proper divisors (225449613360).

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

76499810640 is a wasteful number, since it uses less digits than its factorization.

76499810640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166 (or 121 counting only the distinct ones).

The product of its (nonzero) digits is 2612736, while the sum is 54.

The spelling of 76499810640 in words is "seventy-six billion, four hundred ninety-nine million, eight hundred ten thousand, six hundred forty".