7742393961 has 16 divisors (see below), whose sum is σ = 10887416640. Its totient is φ = 4880528640.

The previous prime is 7742393947. The next prime is 7742393969. The reversal of 7742393961 is 1693932477.

It is not a de Polignac number, because 7742393961 - 2²⁵ = 7708839529 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7742393969) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 100660 + ... + 160053.

It is an arithmetic number, because the mean of its divisors is an integer number (680463540).

Almost surely, 2^7742393961 is an apocalyptic number.

It is an amenable number.

7742393961 is a deficient number, since it is larger than the sum of its proper divisors (3145022679).

7742393961 is a wasteful number, since it uses less digits than its factorization.

7742393961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261256.

The product of its digits is 1714608, while the sum is 51.

The square root of 7742393961 is about 87990.8743052369. The cubic root of 7742393961 is about 1978.2981977103.

The spelling of 7742393961 in words is "seven billion, seven hundred forty-two million, three hundred ninety-three thousand, nine hundred sixty-one".