97786864738 has 32 divisors (see below), whose sum is σ = 156147262704. Its totient is φ = 45769500672.

The previous prime is 97786864717. The next prime is 97786864739. The reversal of 97786864738 is 83746868779.

It can be written as a sum of positive squares in 8 ways, for example, as 38554500609 + 59232364129 = 196353^2 + 243377^2 .

It is not an unprimeable number, because it can be changed into a prime (97786864739) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4915620 + ... + 4935472.

Almost surely, 2^97786864738 is an apocalyptic number.

97786864738 is a deficient number, since it is larger than the sum of its proper divisors (58360397966).

97786864738 is a wasteful number, since it uses less digits than its factorization.

97786864738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20646.

The product of its digits is 682795008, while the sum is 73.

The spelling of 97786864738 in words is "ninety-seven billion, seven hundred eighty-six million, eight hundred sixty-four thousand, seven hundred thirty-eight".