9620643051 has 40 divisors (see below), whose sum is σ = 14954601024. Its totient is φ = 6158730240.

The previous prime is 9620643049. The next prime is 9620643059. The reversal of 9620643051 is 1503460269.

It is a happy number.

9620643051 is a `hidden beast` number, since 9 + 6 + 2 + 0 + 643 + 0 + 5 + 1 = 666.

It is not a de Polignac number, because 9620643051 - 2¹ = 9620643049 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 9620642997 and 9620643015.

It is not an unprimeable number, because it can be changed into a prime (9620643059) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 177931 + ... + 225611.

Almost surely, 2^9620643051 is an apocalyptic number.

9620643051 is a deficient number, since it is larger than the sum of its proper divisors (5333957973).

9620643051 is a wasteful number, since it uses less digits than its factorization.

9620643051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47793 (or 47784 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The square root of 9620643051 is about 98084.8767700709. The cubic root of 9620643051 is about 2126.8394168585.

The spelling of 9620643051 in words is "nine billion, six hundred twenty million, six hundred forty-three thousand, fifty-one".