7920454761 has 12 divisors (see below), whose sum is σ = 11510847088. Its totient is φ = 5247907704.

The previous prime is 7920454753. The next prime is 7920454769. The reversal of 7920454761 is 1674540297.

It is an interprime number because it is at equal distance from previous prime (7920454753) and next prime (7920454769).

It is not a de Polignac number, because 7920454761 - 2³ = 7920454753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7920454769) 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, 2698075 + ... + 2701008.

Almost surely, 2^7920454761 is an apocalyptic number.

It is an amenable number.

7920454761 is a deficient number, since it is larger than the sum of its proper divisors (3590392327).

7920454761 is a wasteful number, since it uses less digits than its factorization.

7920454761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5399252 (or 5399249 counting only the distinct ones).

The product of its (nonzero) digits is 423360, while the sum is 45.

The square root of 7920454761 is about 88996.9368068362. The cubic root of 7920454761 is about 1993.3491376143.

The spelling of 7920454761 in words is "seven billion, nine hundred twenty million, four hundred fifty-four thousand, seven hundred sixty-one".