97950390091 has 8 divisors (see below), whose sum is σ = 105299412480. Its totient is φ = 90820741608.

The previous prime is 97950390071. The next prime is 97950390119. The reversal of 97950390091 is 19009305979.

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

It is not a de Polignac number, because 97950390091 - 2⁷ = 97950389963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (97950390011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54842551 + ... + 54844336.

It is an arithmetic number, because the mean of its divisors is an integer number (13162426560).

Almost surely, 2^97950390091 is an apocalyptic number.

97950390091 is a deficient number, since it is larger than the sum of its proper divisors (7349022389).

97950390091 is a wasteful number, since it uses less digits than its factorization.

97950390091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109686953.

The product of its (nonzero) digits is 688905, while the sum is 52.

The spelling of 97950390091 in words is "ninety-seven billion, nine hundred fifty million, three hundred ninety thousand, ninety-one".