61583799413 has 2 divisors, whose sum is σ = 61583799414. Its totient is φ = 61583799412.

The previous prime is 61583799397. The next prime is 61583799427. The reversal of 61583799413 is 31499738516.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51885095089 + 9698704324 = 227783^2 + 98482^2 .

It is a cyclic number.

It is not a de Polignac number, because 61583799413 - 2⁴ = 61583799397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61523799413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30791899706 + 30791899707.

It is an arithmetic number, because the mean of its divisors is an integer number (30791899707).

Almost surely, 2^61583799413 is an apocalyptic number.

It is an amenable number.

61583799413 is a deficient number, since it is larger than the sum of its proper divisors (1).

61583799413 is an equidigital number, since it uses as much as digits as its factorization.

61583799413 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4898880, while the sum is 56.

The spelling of 61583799413 in words is "sixty-one billion, five hundred eighty-three million, seven hundred ninety-nine thousand, four hundred thirteen".