61155617016601 has 4 divisors (see below), whose sum is σ = 63814556886912. Its totient is φ = 58496677146292.

The previous prime is 61155617016547. The next prime is 61155617016661. The reversal of 61155617016601 is 10661071655116.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 61155617016601 - 2⁹ = 61155617016089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61155617016661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1329469935121 + ... + 1329469935166.

It is an arithmetic number, because the mean of its divisors is an integer number (15953639221728).

Almost surely, 2^{61155617016601} is an apocalyptic number.

It is an amenable number.

61155617016601 is a deficient number, since it is larger than the sum of its proper divisors (2658939870311).

61155617016601 is a wasteful number, since it uses less digits than its factorization.

61155617016601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2658939870310.

The product of its (nonzero) digits is 226800, while the sum is 46.

The spelling of 61155617016601 in words is "sixty-one trillion, one hundred fifty-five billion, six hundred seventeen million, sixteen thousand, six hundred one".