99970424761 has 27 divisors (see below), whose sum is σ = 106765466479. Its totient is φ = 93599693792.

The previous prime is 99970424759. The next prime is 99970424779. The reversal of 99970424761 is 16742407999.

The square root of 99970424761 is 316181.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 20301975225 + 79668449536 = 142485^2 + 282256^2 .

It is not a de Polignac number, because 99970424761 - 2¹ = 99970424759 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 99970424696 and 99970424705.

It is not an unprimeable number, because it can be changed into a prime (99970424461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 429057501 + ... + 429057733.

Almost surely, 2^99970424761 is an apocalyptic number.

99970424761 is the 316181-st square number.

99970424761 is the 158091-st centered octagonal number.

It is an amenable number.

99970424761 is a deficient number, since it is larger than the sum of its proper divisors (6795041718).

99970424761 is an frugal number, since it uses more digits than its factorization.

99970424761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 630 (or 315 counting only the distinct ones).

The product of its (nonzero) digits is 6858432, while the sum is 58.

The spelling of 99970424761 in words is "ninety-nine billion, nine hundred seventy million, four hundred twenty-four thousand, seven hundred sixty-one".