5655721060537 has 2 divisors, whose sum is σ = 5655721060538. Its totient is φ = 5655721060536.

The previous prime is 5655721060529. The next prime is 5655721060541. The reversal of 5655721060537 is 7350601275565.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3912420704256 + 1743300356281 = 1977984^2 + 1320341^2 .

It is a cyclic number.

It is not a de Polignac number, because 5655721060537 - 2³ = 5655721060529 is a prime.

It is not a weakly prime, because it can be changed into another prime (5655721060547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2827860530268 + 2827860530269.

It is an arithmetic number, because the mean of its divisors is an integer number (2827860530269).

Almost surely, 2^{5655721060537} is an apocalyptic number.

It is an amenable number.

5655721060537 is a deficient number, since it is larger than the sum of its proper divisors (1).

5655721060537 is an equidigital number, since it uses as much as digits as its factorization.

5655721060537 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6615000, while the sum is 52.

The spelling of 5655721060537 in words is "five trillion, six hundred fifty-five billion, seven hundred twenty-one million, sixty thousand, five hundred thirty-seven".