61351045161937 has 2 divisors, whose sum is σ = 61351045161938. Its totient is φ = 61351045161936.

The previous prime is 61351045161821. The next prime is 61351045162037. The reversal of 61351045161937 is 73916154015316.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 58149150062481 + 3201895099456 = 7625559^2 + 1789384^2 .

It is a cyclic number.

It is not a de Polignac number, because 61351045161937 - 2¹¹ = 61351045159889 is a prime.

It is not a weakly prime, because it can be changed into another prime (61351045161337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30675522580968 + 30675522580969.

It is an arithmetic number, because the mean of its divisors is an integer number (30675522580969).

Almost surely, 2^{61351045161937} is an apocalyptic number.

It is an amenable number.

61351045161937 is a deficient number, since it is larger than the sum of its proper divisors (1).

61351045161937 is an equidigital number, since it uses as much as digits as its factorization.

61351045161937 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2041200, while the sum is 52.

The spelling of 61351045161937 in words is "sixty-one trillion, three hundred fifty-one billion, forty-five million, one hundred sixty-one thousand, nine hundred thirty-seven".