77970059646 has 8 divisors (see below), whose sum is σ = 155940119304. Its totient is φ = 25990019880.

The previous prime is 77970059621. The next prime is 77970059701. The reversal of 77970059646 is 64695007977.

It is a sphenic number, since it is the product of 3 distinct primes.

77970059646 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 77970059646.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6497504965 + ... + 6497504976.

It is an arithmetic number, because the mean of its divisors is an integer number (19492514913).

Almost surely, 2^77970059646 is an apocalyptic number.

77970059646 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

77970059646 is a wasteful number, since it uses less digits than its factorization.

77970059646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12995009946.

The product of its (nonzero) digits is 20003760, while the sum is 60.

The spelling of 77970059646 in words is "seventy-seven billion, nine hundred seventy million, fifty-nine thousand, six hundred forty-six".