97765998490 has 8 divisors (see below), whose sum is σ = 175978797300. Its totient is φ = 39106399392.

The previous prime is 97765998487. The next prime is 97765998503. The reversal of 97765998490 is 9489956779.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 92812231801 + 4953766689 = 304651^2 + 70383^2 .

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

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, 4888299915 + ... + 4888299934.

Almost surely, 2^97765998490 is an apocalyptic number.

97765998490 is a deficient number, since it is larger than the sum of its proper divisors (78212798810).

97765998490 is a wasteful number, since it uses less digits than its factorization.

97765998490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9776599856.

The product of its (nonzero) digits is 308629440, while the sum is 73.

The spelling of 97765998490 in words is "ninety-seven billion, seven hundred sixty-five million, nine hundred ninety-eight thousand, four hundred ninety".