61658883019 has 2 divisors, whose sum is σ = 61658883020. Its totient is φ = 61658883018.

The previous prime is 61658882993. The next prime is 61658883029. The reversal of 61658883019 is 91038885616.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61658883019 - 2⁹ = 61658882507 is a prime.

It is a super-2 number, since 2×61658883019² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (61658883029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30829441509 + 30829441510.

It is an arithmetic number, because the mean of its divisors is an integer number (30829441510).

Almost surely, 2^61658883019 is an apocalyptic number.

61658883019 is a deficient number, since it is larger than the sum of its proper divisors (1).

61658883019 is an equidigital number, since it uses as much as digits as its factorization.

61658883019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2488320, while the sum is 55.

The spelling of 61658883019 in words is "sixty-one billion, six hundred fifty-eight million, eight hundred eighty-three thousand, nineteen".