73798916421 has 16 divisors (see below), whose sum is σ = 99662607360. Its totient is φ = 48567483120.

The previous prime is 73798916413. The next prime is 73798916431. The reversal of 73798916421 is 12461989737.

It is a happy number.

It is not a de Polignac number, because 73798916421 - 2³ = 73798916413 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73798916431) 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, 1398706 + ... + 1450508.

It is an arithmetic number, because the mean of its divisors is an integer number (6228912960).

Almost surely, 2^73798916421 is an apocalyptic number.

It is an amenable number.

73798916421 is a deficient number, since it is larger than the sum of its proper divisors (25863690939).

73798916421 is a wasteful number, since it uses less digits than its factorization.

73798916421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57896.

The product of its digits is 4572288, while the sum is 57.

The spelling of 73798916421 in words is "seventy-three billion, seven hundred ninety-eight million, nine hundred sixteen thousand, four hundred twenty-one".