76629473646 has 64 divisors (see below), whose sum is σ = 169217199360. Its totient is φ = 22940962560.

The previous prime is 76629473617. The next prime is 76629473653. The reversal of 76629473646 is 64637492667.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 76629473646.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2480970 + ... + 2511666.

It is an arithmetic number, because the mean of its divisors is an integer number (2644018740).

Almost surely, 2^76629473646 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 76629473646, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84608599680).

76629473646 is an abundant number, since it is smaller than the sum of its proper divisors (92587725714).

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

76629473646 is a wasteful number, since it uses less digits than its factorization.

76629473646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31169.

The product of its digits is 54867456, while the sum is 60.

The spelling of 76629473646 in words is "seventy-six billion, six hundred twenty-nine million, four hundred seventy-three thousand, six hundred forty-six".