57621536151409 has 2 divisors, whose sum is σ = 57621536151410. Its totient is φ = 57621536151408.

The previous prime is 57621536151379. The next prime is 57621536151451. The reversal of 57621536151409 is 90415163512675.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43507216000000 + 14114320151409 = 6596000^2 + 3756903^2 .

It is a cyclic number.

It is not a de Polignac number, because 57621536151409 - 2⁷ = 57621536151281 is a prime.

It is a super-2 number, since 2×57621536151409² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 57621536151409.

It is not a weakly prime, because it can be changed into another prime (57621536151709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28810768075704 + 28810768075705.

It is an arithmetic number, because the mean of its divisors is an integer number (28810768075705).

Almost surely, 2^{57621536151409} is an apocalyptic number.

It is an amenable number.

57621536151409 is a deficient number, since it is larger than the sum of its proper divisors (1).

57621536151409 is an equidigital number, since it uses as much as digits as its factorization.

57621536151409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6804000, while the sum is 55.

The spelling of 57621536151409 in words is "fifty-seven trillion, six hundred twenty-one billion, five hundred thirty-six million, one hundred fifty-one thousand, four hundred nine".