76487631990 has 256 divisors, whose sum is σ = 244347549696. Its totient is φ = 14957690880.

The previous prime is 76487631953. The next prime is 76487632003. The reversal of 76487631990 is 9913678467.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 4743622 + ... + 4759718.

It is an arithmetic number, because the mean of its divisors is an integer number (954482616).

Almost surely, 2^76487631990 is an apocalyptic number.

76487631990 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 76487631990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (122173774848).

76487631990 is an abundant number, since it is smaller than the sum of its proper divisors (167859917706).

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

76487631990 is a wasteful number, since it uses less digits than its factorization.

76487631990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16164 (or 16142 counting only the distinct ones).

The product of its (nonzero) digits is 13716864, while the sum is 60.

The spelling of 76487631990 in words is "seventy-six billion, four hundred eighty-seven million, six hundred thirty-one thousand, nine hundred ninety".