7961134591 has 2 divisors, whose sum is σ = 7961134592. Its totient is φ = 7961134590.

The previous prime is 7961134579. The next prime is 7961134609. The reversal of 7961134591 is 1954311697.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 7961134591 - 2²¹ = 7959037439 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7961134891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3980567295 + 3980567296.

It is an arithmetic number, because the mean of its divisors is an integer number (3980567296).

Almost surely, 2^7961134591 is an apocalyptic number.

7961134591 is a deficient number, since it is larger than the sum of its proper divisors (1).

7961134591 is an equidigital number, since it uses as much as digits as its factorization.

7961134591 is an evil number, because the sum of its binary digits is even.

The product of its digits is 204120, while the sum is 46.

The square root of 7961134591 is about 89225.1903388275. The cubic root of 7961134591 is about 1996.7559568537.

The spelling of 7961134591 in words is "seven billion, nine hundred sixty-one million, one hundred thirty-four thousand, five hundred ninety-one".