214992186978 has 192 divisors, whose sum is σ = 499486740480. Its totient is φ = 61442841600.

The previous prime is 214992186869. The next prime is 214992186989. The reversal of 214992186978 is 879681299412.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 184859425 + ... + 184860587.

It is an arithmetic number, because the mean of its divisors is an integer number (2601493440).

Almost surely, 2^214992186978 is an apocalyptic number.

214992186978 is an abundant number, since it is smaller than the sum of its proper divisors (284494553502).

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

214992186978 is a wasteful number, since it uses less digits than its factorization.

214992186978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1433 (or 1416 counting only the distinct ones).

The product of its digits is 31352832, while the sum is 66.

The spelling of 214992186978 in words is "two hundred fourteen billion, nine hundred ninety-two million, one hundred eighty-six thousand, nine hundred seventy-eight".