61305297669 has 48 divisors (see below), whose sum is σ = 113386515840. Its totient is φ = 30986167680.

The previous prime is 61305297667. The next prime is 61305297679. The reversal of 61305297669 is 96679250316.

It is not a de Polignac number, because 61305297669 - 2¹ = 61305297667 is a prime.

It is a super-2 number, since 2×61305297669² (a number of 22 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61305297661) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1169814 + ... + 1221095.

It is an arithmetic number, because the mean of its divisors is an integer number (2362219080).

Almost surely, 2^61305297669 is an apocalyptic number.

It is an amenable number.

61305297669 is a deficient number, since it is larger than the sum of its proper divisors (52081218171).

61305297669 is a wasteful number, since it uses less digits than its factorization.

61305297669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2390970 (or 2390967 counting only the distinct ones).

The product of its (nonzero) digits is 3674160, while the sum is 54.

The spelling of 61305297669 in words is "sixty-one billion, three hundred five million, two hundred ninety-seven thousand, six hundred sixty-nine".