61115094637 has 2 divisors, whose sum is σ = 61115094638. Its totient is φ = 61115094636.

The previous prime is 61115094619. The next prime is 61115094641. The reversal of 61115094637 is 73649051116.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 60840662281 + 274432356 = 246659^2 + 16566^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61115094637 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 61115094593 and 61115094602.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61115095637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30557547318 + 30557547319.

It is an arithmetic number, because the mean of its divisors is an integer number (30557547319).

Almost surely, 2^61115094637 is an apocalyptic number.

It is an amenable number.

61115094637 is a deficient number, since it is larger than the sum of its proper divisors (1).

61115094637 is an equidigital number, since it uses as much as digits as its factorization.

61115094637 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 136080, while the sum is 43.

The spelling of 61115094637 in words is "sixty-one billion, one hundred fifteen million, ninety-four thousand, six hundred thirty-seven".