32405978990860 has 12 divisors (see below), whose sum is σ = 68052555880848. Its totient is φ = 12962391596336.

The previous prime is 32405978990767. The next prime is 32405978990881. The reversal of 32405978990860 is 6809987950423.

It is a self number, because there is not a number n which added to its sum of digits gives 32405978990860.

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, 810149474752 + ... + 810149474791.

It is an arithmetic number, because the mean of its divisors is an integer number (5671046323404).

Almost surely, 2^{32405978990860} is an apocalyptic number.

It is an amenable number.

32405978990860 is an abundant number, since it is smaller than the sum of its proper divisors (35646576889988).

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

32405978990860 is a wasteful number, since it uses less digits than its factorization.

32405978990860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1620298949552 (or 1620298949550 counting only the distinct ones).

The product of its (nonzero) digits is 235146240, while the sum is 70.

The spelling of 32405978990860 in words is "thirty-two trillion, four hundred five billion, nine hundred seventy-eight million, nine hundred ninety thousand, eight hundred sixty".