61155306679 has 2 divisors, whose sum is σ = 61155306680. Its totient is φ = 61155306678.

The previous prime is 61155306601. The next prime is 61155306743. The reversal of 61155306679 is 97660355116.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61155306679 - 2²⁷ = 61021088951 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61155106679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30577653339 + 30577653340.

It is an arithmetic number, because the mean of its divisors is an integer number (30577653340).

Almost surely, 2^61155306679 is an apocalyptic number.

61155306679 is a deficient number, since it is larger than the sum of its proper divisors (1).

61155306679 is an equidigital number, since it uses as much as digits as its factorization.

61155306679 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1020600, while the sum is 49.

The spelling of 61155306679 in words is "sixty-one billion, one hundred fifty-five million, three hundred six thousand, six hundred seventy-nine".