74819950621 has 16 divisors (see below), whose sum is σ = 82312876800. Its totient is φ = 67576074048.

The previous prime is 74819950619. The next prime is 74819950631. The reversal of 74819950621 is 12605991847.

It is a cyclic number.

It is not a de Polignac number, because 74819950621 - 2¹ = 74819950619 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74819950631) 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, 2440375 + ... + 2470843.

It is an arithmetic number, because the mean of its divisors is an integer number (5144554800).

Almost surely, 2^74819950621 is an apocalyptic number.

It is an amenable number.

74819950621 is a deficient number, since it is larger than the sum of its proper divisors (7492926179).

74819950621 is a wasteful number, since it uses less digits than its factorization.

74819950621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34548.

The product of its (nonzero) digits is 1088640, while the sum is 52.

The spelling of 74819950621 in words is "seventy-four billion, eight hundred nineteen million, nine hundred fifty thousand, six hundred twenty-one".