61423334342745 has 16 divisors (see below), whose sum is σ = 98287154085120. Its totient is φ = 32755838603904.

The previous prime is 61423334342729. The next prime is 61423334342753. The reversal of 61423334342745 is 54724343332416.

It is a happy number.

It is not a de Polignac number, because 61423334342745 - 2⁴ = 61423334342729 is a prime.

It is a super-2 number, since 2×61423334342745² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 204410209 + ... + 204710478.

It is an arithmetic number, because the mean of its divisors is an integer number (6142947130320).

Almost surely, 2^{61423334342745} is an apocalyptic number.

It is an amenable number.

61423334342745 is a deficient number, since it is larger than the sum of its proper divisors (36863819742375).

61423334342745 is a wasteful number, since it uses less digits than its factorization.

61423334342745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 409130704.

The product of its digits is 17418240, while the sum is 51.

The spelling of 61423334342745 in words is "sixty-one trillion, four hundred twenty-three billion, three hundred thirty-four million, three hundred forty-two thousand, seven hundred forty-five".