57621762811 has 2 divisors, whose sum is σ = 57621762812. Its totient is φ = 57621762810.

The previous prime is 57621762797. The next prime is 57621762823. The reversal of 57621762811 is 11826712675.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-57621762811 is a prime.

It is not a weakly prime, because it can be changed into another prime (57621762511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28810881405 + 28810881406.

It is an arithmetic number, because the mean of its divisors is an integer number (28810881406).

Almost surely, 2^57621762811 is an apocalyptic number.

57621762811 is a deficient number, since it is larger than the sum of its proper divisors (1).

57621762811 is an equidigital number, since it uses as much as digits as its factorization.

57621762811 is an evil number, because the sum of its binary digits is even.

The product of its digits is 282240, while the sum is 46.

The spelling of 57621762811 in words is "fifty-seven billion, six hundred twenty-one million, seven hundred sixty-two thousand, eight hundred eleven".