61026457937 has 2 divisors, whose sum is σ = 61026457938. Its totient is φ = 61026457936.

The previous prime is 61026457901. The next prime is 61026457981. The reversal of 61026457937 is 73975462016.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 48336660736 + 12689797201 = 219856^2 + 112649^2 .

It is a cyclic number.

It is not a de Polignac number, because 61026457937 - 2⁶ = 61026457873 is a prime.

It is not a weakly prime, because it can be changed into another prime (61026457337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30513228968 + 30513228969.

It is an arithmetic number, because the mean of its divisors is an integer number (30513228969).

Almost surely, 2^61026457937 is an apocalyptic number.

It is an amenable number.

61026457937 is a deficient number, since it is larger than the sum of its proper divisors (1).

61026457937 is an equidigital number, since it uses as much as digits as its factorization.

61026457937 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1905120, while the sum is 50.

The spelling of 61026457937 in words is "sixty-one billion, twenty-six million, four hundred fifty-seven thousand, nine hundred thirty-seven".