61913976206123 has 4 divisors (see below), whose sum is σ = 61914056567400. Its totient is φ = 61913895844848.

The previous prime is 61913976206111. The next prime is 61913976206233. The reversal of 61913976206123 is 32160267931916.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 61913976206123 - 2¹⁴ = 61913976189739 is a prime.

It is a super-2 number, since 2×61913976206123² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61913976266123) 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, 39013673 + ... + 40569626.

It is an arithmetic number, because the mean of its divisors is an integer number (15478514141850).

Almost surely, 2^{61913976206123} is an apocalyptic number.

61913976206123 is a deficient number, since it is larger than the sum of its proper divisors (80361277).

61913976206123 is an equidigital number, since it uses as much as digits as its factorization.

61913976206123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80361276.

The product of its (nonzero) digits is 4408992, while the sum is 56.

The spelling of 61913976206123 in words is "sixty-one trillion, nine hundred thirteen billion, nine hundred seventy-six million, two hundred six thousand, one hundred twenty-three".