97661387913 has 8 divisors (see below), whose sum is σ = 130306697088. Its totient is φ = 65061835344.

The previous prime is 97661387903. The next prime is 97661387917. The reversal of 97661387913 is 31978316679.

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

It is not a de Polignac number, because 97661387913 - 2⁶ = 97661387849 is a prime.

It is a Smith number, since the sum of its digits (60) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (97661387917) 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, 11434170 + ... + 11442707.

It is an arithmetic number, because the mean of its divisors is an integer number (16288337136).

Almost surely, 2^97661387913 is an apocalyptic number.

It is an amenable number.

97661387913 is a deficient number, since it is larger than the sum of its proper divisors (32645309175).

97661387913 is a wasteful number, since it uses less digits than its factorization.

97661387913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22878303.

The product of its digits is 10287648, while the sum is 60.

The spelling of 97661387913 in words is "ninety-seven billion, six hundred sixty-one million, three hundred eighty-seven thousand, nine hundred thirteen".