74867739621 has 8 divisors (see below), whose sum is σ = 99853906464. Its totient is φ = 49896699600.

The previous prime is 74867739613. The next prime is 74867739659. The reversal of 74867739621 is 12693776847.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 74867739621 - 2³ = 74867739613 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74867734621) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3770151 + ... + 3789956.

It is an arithmetic number, because the mean of its divisors is an integer number (12481738308).

Almost surely, 2^74867739621 is an apocalyptic number.

It is an amenable number.

74867739621 is a deficient number, since it is larger than the sum of its proper divisors (24986166843).

74867739621 is a wasteful number, since it uses less digits than its factorization.

74867739621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7563411.

The product of its digits is 21337344, while the sum is 60.

The spelling of 74867739621 in words is "seventy-four billion, eight hundred sixty-seven million, seven hundred thirty-nine thousand, six hundred twenty-one".