9742975647876 has 81 divisors (see below), whose sum is σ = 24696675249519. Its totient is φ = 3238637778432.

The previous prime is 9742975647841. The next prime is 9742975647887. The reversal of 9742975647876 is 6787465792479.

The square root of 9742975647876 is 3121374.

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

9742975647876 is a `hidden beast` number, since 9 + 7 + 4 + 2 + 9 + 75 + 6 + 478 + 76 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 4108429009476 + 5634546638400 = 2026926^2 + 2373720^2 .

It is a super-2 number, since 2×9742975647876² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 9742975647795 and 9742975647804.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 12604107826 + ... + 12604108598.

Almost surely, 2^{9742975647876} is an apocalyptic number.

9742975647876 is the 3121374-th square number.

It is an amenable number.

9742975647876 is an abundant number, since it is smaller than the sum of its proper divisors (14953699601643).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9742975647876 is an frugal number, since it uses more digits than its factorization.

9742975647876 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2902 (or 1451 counting only the distinct ones).

The product of its digits is 8961684480, while the sum is 81.

Multiplying 9742975647876 by its sum of digits (81), we get a square (789181027477956 = 28092366²).

The spelling of 9742975647876 in words is "nine trillion, seven hundred forty-two billion, nine hundred seventy-five million, six hundred forty-seven thousand, eight hundred seventy-six".