97064381918661 has 32 divisors (see below), whose sum is σ = 131327587921920. Its totient is φ = 63762438976704.

The previous prime is 97064381918653. The next prime is 97064381918671. The reversal of 97064381918661 is 16681918346079.

It is not a de Polignac number, because 97064381918661 - 2³ = 97064381918653 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97064381918611) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 49271475 + ... + 51203583.

It is an arithmetic number, because the mean of its divisors is an integer number (4103987122560).

Almost surely, 2^{97064381918661} is an apocalyptic number.

It is an amenable number.

97064381918661 is a deficient number, since it is larger than the sum of its proper divisors (34263206003259).

97064381918661 is a wasteful number, since it uses less digits than its factorization.

97064381918661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1933025.

The product of its (nonzero) digits is 94058496, while the sum is 69.

The spelling of 97064381918661 in words is "ninety-seven trillion, sixty-four billion, three hundred eighty-one million, nine hundred eighteen thousand, six hundred sixty-one".