97761866408 has 16 divisors (see below), whose sum is σ = 194086058580. Its totient is φ = 46005584128.

The previous prime is 97761866347. The next prime is 97761866431. The reversal of 97761866408 is 80466816779.

It can be written as a sum of positive squares in 2 ways, for example, as 93099434884 + 4662431524 = 305122^2 + 68282^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 359418491 + ... + 359418762.

Almost surely, 2^97761866408 is an apocalyptic number.

It is an amenable number.

97761866408 is a deficient number, since it is larger than the sum of its proper divisors (96324192172).

97761866408 is a wasteful number, since it uses less digits than its factorization.

97761866408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 718837276 (or 718837272 counting only the distinct ones).

The product of its (nonzero) digits is 24385536, while the sum is 62.

The spelling of 97761866408 in words is "ninety-seven billion, seven hundred sixty-one million, eight hundred sixty-six thousand, four hundred eight".