9764972505 has 12 divisors (see below), whose sum is σ = 16925952420. Its totient is φ = 5207985312.

The previous prime is 9764972479. The next prime is 9764972509. The reversal of 9764972505 is 5052794679.

9764972505 is a `hidden beast` number, since 9 + 7 + 64 + 9 + 72 + 505 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1569110544 + 8195861961 = 39612^2 + 90531^2 .

It is not a de Polignac number, because 9764972505 - 2⁷ = 9764972377 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9764972509) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 108499650 + ... + 108499739.

It is an arithmetic number, because the mean of its divisors is an integer number (1410496035).

Almost surely, 2^9764972505 is an apocalyptic number.

It is an amenable number.

9764972505 is a deficient number, since it is larger than the sum of its proper divisors (7160979915).

9764972505 is a wasteful number, since it uses less digits than its factorization.

9764972505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216999400 (or 216999397 counting only the distinct ones).

The product of its (nonzero) digits is 4762800, while the sum is 54.

The square root of 9764972505 is about 98817.8754325350. The cubic root of 9764972505 is about 2137.4223269200.

The spelling of 9764972505 in words is "nine billion, seven hundred sixty-four million, nine hundred seventy-two thousand, five hundred five".