61980458107 has 2 divisors, whose sum is σ = 61980458108. Its totient is φ = 61980458106.

The previous prime is 61980458069. The next prime is 61980458149. The reversal of 61980458107 is 70185408916.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61980458107 - 2²³ = 61972069499 is a prime.

It is not a weakly prime, because it can be changed into another prime (61980458207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30990229053 + 30990229054.

It is an arithmetic number, because the mean of its divisors is an integer number (30990229054).

Almost surely, 2^61980458107 is an apocalyptic number.

61980458107 is a deficient number, since it is larger than the sum of its proper divisors (1).

61980458107 is an equidigital number, since it uses as much as digits as its factorization.

61980458107 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 483840, while the sum is 49.

The spelling of 61980458107 in words is "sixty-one billion, nine hundred eighty million, four hundred fifty-eight thousand, one hundred seven".