1613979959965 has 16 divisors (see below), whose sum is σ = 2050807030272. Its totient is φ = 1215170884864.

The previous prime is 1613979959929. The next prime is 1613979959981. The reversal of 1613979959965 is 5699599793161.

It is a cyclic number.

It is not a de Polignac number, because 1613979959965 - 2²¹ = 1613977862813 is a prime.

It is a super-2 number, since 2×1613979959965² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1260732 + ... + 2194858.

It is an arithmetic number, because the mean of its divisors is an integer number (128175439392).

Almost surely, 2^{1613979959965} is an apocalyptic number.

It is an amenable number.

1613979959965 is a deficient number, since it is larger than the sum of its proper divisors (436827070307).

1613979959965 is a wasteful number, since it uses less digits than its factorization.

1613979959965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 954476.

The product of its digits is 1116026100, while the sum is 79.

The spelling of 1613979959965 in words is "one trillion, six hundred thirteen billion, nine hundred seventy-nine million, nine hundred fifty-nine thousand, nine hundred sixty-five".