61072872253779 has 16 divisors (see below), whose sum is σ = 82584697029120. Its totient is φ = 40138249105920.

The previous prime is 61072872253759. The next prime is 61072872253787. The reversal of 61072872253779 is 97735227827016.

It is not a de Polignac number, because 61072872253779 - 2¹³ = 61072872245587 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61072872253759) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10241487 + ... + 15067640.

It is an arithmetic number, because the mean of its divisors is an integer number (5161543564320).

Almost surely, 2^{61072872253779} is an apocalyptic number.

61072872253779 is a deficient number, since it is larger than the sum of its proper divisors (21511824775341).

61072872253779 is a wasteful number, since it uses less digits than its factorization.

61072872253779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25320530.

The product of its (nonzero) digits is 124467840, while the sum is 66.

The spelling of 61072872253779 in words is "sixty-one trillion, seventy-two billion, eight hundred seventy-two million, two hundred fifty-three thousand, seven hundred seventy-nine".