77000384646 has 32 divisors (see below), whose sum is σ = 172806156000. Its totient is φ = 25412666400.

The previous prime is 77000384639. The next prime is 77000384689. The reversal of 77000384646 is 64648300077.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7053621 + ... + 7064528.

It is an arithmetic number, because the mean of its divisors is an integer number (5400192375).

Almost surely, 2^77000384646 is an apocalyptic number.

77000384646 is an abundant number, since it is smaller than the sum of its proper divisors (95805771354).

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

77000384646 is a wasteful number, since it uses less digits than its factorization.

77000384646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14118261 (or 14118255 counting only the distinct ones).

The product of its (nonzero) digits is 677376, while the sum is 45.

The spelling of 77000384646 in words is "seventy-seven billion, three hundred eighty-four thousand, six hundred forty-six".