51357956003461 has 2 divisors, whose sum is σ = 51357956003462. Its totient is φ = 51357956003460.

The previous prime is 51357956003437. The next prime is 51357956003587. The reversal of 51357956003461 is 16430065975315.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43928978875236 + 7428977128225 = 6627894^2 + 2725615^2 .

It is a cyclic number.

It is not a de Polignac number, because 51357956003461 - 2²¹ = 51357953906309 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51357956003401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25678978001730 + 25678978001731.

It is an arithmetic number, because the mean of its divisors is an integer number (25678978001731).

Almost surely, 2^{51357956003461} is an apocalyptic number.

It is an amenable number.

51357956003461 is a deficient number, since it is larger than the sum of its proper divisors (1).

51357956003461 is an equidigital number, since it uses as much as digits as its factorization.

51357956003461 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10206000, while the sum is 55.

The spelling of 51357956003461 in words is "fifty-one trillion, three hundred fifty-seven billion, nine hundred fifty-six million, three thousand, four hundred sixty-one".