97700189961 has 16 divisors (see below), whose sum is σ = 146693541888. Its totient is φ = 57302163600.

The previous prime is 97700189953. The next prime is 97700189971. The reversal of 97700189961 is 16998100779.

It is not a de Polignac number, because 97700189961 - 2³ = 97700189953 is a prime.

It is not an unprimeable number, because it can be changed into a prime (97700189971) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47750781 + ... + 47752826.

It is an arithmetic number, because the mean of its divisors is an integer number (9168346368).

Almost surely, 2^97700189961 is an apocalyptic number.

It is an amenable number.

97700189961 is a deficient number, since it is larger than the sum of its proper divisors (48993351927).

97700189961 is a wasteful number, since it uses less digits than its factorization.

97700189961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95503652.

The product of its (nonzero) digits is 1714608, while the sum is 57.

It can be divided in two parts, 97700 and 189961, that added together give a triangular number (287661 = T₇₅₈).

The spelling of 97700189961 in words is "ninety-seven billion, seven hundred million, one hundred eighty-nine thousand, nine hundred sixty-one".