74981730261 has 32 divisors (see below), whose sum is σ = 103016448000. Its totient is φ = 48487937600.

The previous prime is 74981730253. The next prime is 74981730281. The reversal of 74981730261 is 16203718947.

It is a happy number.

It is not a de Polignac number, because 74981730261 - 2³ = 74981730253 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 74981730261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74981730211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10059586 + ... + 10067036.

It is an arithmetic number, because the mean of its divisors is an integer number (3219264000).

Almost surely, 2^74981730261 is an apocalyptic number.

It is an amenable number.

74981730261 is a deficient number, since it is larger than the sum of its proper divisors (28034717739).

74981730261 is a wasteful number, since it uses less digits than its factorization.

74981730261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8129.

The product of its (nonzero) digits is 508032, while the sum is 48.

The spelling of 74981730261 in words is "seventy-four billion, nine hundred eighty-one million, seven hundred thirty thousand, two hundred sixty-one".