97690954509 has 24 divisors (see below), whose sum is σ = 147462936192. Its totient is φ = 62259240960.

The previous prime is 97690954499. The next prime is 97690954531. The reversal of 97690954509 is 90545909679.

97690954509 is a `hidden beast` number, since 9 + 7 + 6 + 90 + 95 + 450 + 9 = 666.

It is not a de Polignac number, because 97690954509 - 2⁸ = 97690954253 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97690954549) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2667252 + ... + 2703629.

It is an arithmetic number, because the mean of its divisors is an integer number (6144289008).

Almost surely, 2^97690954509 is an apocalyptic number.

It is an amenable number.

97690954509 is a deficient number, since it is larger than the sum of its proper divisors (49771981683).

97690954509 is a wasteful number, since it uses less digits than its factorization.

97690954509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5370977 (or 5370974 counting only the distinct ones).

The product of its (nonzero) digits is 27556200, while the sum is 63.

The spelling of 97690954509 in words is "ninety-seven billion, six hundred ninety million, nine hundred fifty-four thousand, five hundred nine".