97213353978 has 32 divisors (see below), whose sum is σ = 213333232896. Its totient is φ = 29347426368.

The previous prime is 97213353961. The next prime is 97213353983. The reversal of 97213353978 is 87935331279.

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, 11753650 + ... + 11761917.

It is an arithmetic number, because the mean of its divisors is an integer number (6666663528).

Almost surely, 2^97213353978 is an apocalyptic number.

97213353978 is an abundant number, since it is smaller than the sum of its proper divisors (116119878918).

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

97213353978 is a wasteful number, since it uses less digits than its factorization.

97213353978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23515638.

The product of its digits is 8573040, while the sum is 57.

The spelling of 97213353978 in words is "ninety-seven billion, two hundred thirteen million, three hundred fifty-three thousand, nine hundred seventy-eight".