954157808561 has 2 divisors, whose sum is σ = 954157808562. Its totient is φ = 954157808560.

The previous prime is 954157808509. The next prime is 954157808563. The reversal of 954157808561 is 165808751459.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 595798734400 + 358359074161 = 771880^2 + 598631^2 .

It is a cyclic number.

It is not a de Polignac number, because 954157808561 - 2³⁴ = 936977939377 is a prime.

Together with 954157808563, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 954157808561.

It is not a weakly prime, because it can be changed into another prime (954157808563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 477078904280 + 477078904281.

It is an arithmetic number, because the mean of its divisors is an integer number (477078904281).

Almost surely, 2^954157808561 is an apocalyptic number.

It is an amenable number.

954157808561 is a deficient number, since it is larger than the sum of its proper divisors (1).

954157808561 is an equidigital number, since it uses as much as digits as its factorization.

954157808561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12096000, while the sum is 59.

The spelling of 954157808561 in words is "nine hundred fifty-four billion, one hundred fifty-seven million, eight hundred eight thousand, five hundred sixty-one".