97391007961 has 8 divisors (see below), whose sum is σ = 106602012104. Its totient is φ = 88425630720.

The previous prime is 97391007929. The next prime is 97391007983. The reversal of 97391007961 is 16970019379.

It can be written as a sum of positive squares in 4 ways, for example, as 4170705561 + 93220302400 = 64581^2 + 305320^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 97391007961 - 2⁵ = 97391007929 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 97391007899 and 97391007908.

It is not an unprimeable number, because it can be changed into a prime (97391007761) 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, 61405896 + ... + 61407481.

It is an arithmetic number, because the mean of its divisors is an integer number (13325251513).

Almost surely, 2^97391007961 is an apocalyptic number.

It is an amenable number.

97391007961 is a deficient number, since it is larger than the sum of its proper divisors (9211004143).

97391007961 is a wasteful number, since it uses less digits than its factorization.

97391007961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122813451.

The product of its (nonzero) digits is 642978, while the sum is 52.

The spelling of 97391007961 in words is "ninety-seven billion, three hundred ninety-one million, seven thousand, nine hundred sixty-one".