74991086901 has 16 divisors (see below), whose sum is σ = 111116325120. Its totient is φ = 49985769600.

The previous prime is 74991086887. The next prime is 74991086917. The reversal of 74991086901 is 10968019947.

It is not a de Polignac number, because 74991086901 - 2¹¹ = 74991084853 is a prime.

It is a super-2 number, since 2×74991086901² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74991086701) 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 15 ways as a sum of consecutive naturals, for example, 62125 + ... + 392226.

It is an arithmetic number, because the mean of its divisors is an integer number (6944770320).

Almost surely, 2^74991086901 is an apocalyptic number.

It is an amenable number.

74991086901 is a deficient number, since it is larger than the sum of its proper divisors (36125238219).

74991086901 is a wasteful number, since it uses less digits than its factorization.

74991086901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 460473 (or 460467 counting only the distinct ones).

The product of its (nonzero) digits is 979776, while the sum is 54.

The spelling of 74991086901 in words is "seventy-four billion, nine hundred ninety-one million, eighty-six thousand, nine hundred one".