73972402281 has 16 divisors (see below), whose sum is σ = 110005441920. Its totient is φ = 49127420880.

The previous prime is 73972402279. The next prime is 73972402319. The reversal of 73972402281 is 18220427937.

It is not a de Polignac number, because 73972402281 - 2¹ = 73972402279 is a prime.

It is a super-2 number, since 2×73972402281² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (73972402271) 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, 5201490 + ... + 5215691.

It is an arithmetic number, because the mean of its divisors is an integer number (6875340120).

Almost surely, 2^73972402281 is an apocalyptic number.

It is an amenable number.

73972402281 is a deficient number, since it is larger than the sum of its proper divisors (36033039639).

73972402281 is a wasteful number, since it uses less digits than its factorization.

73972402281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10417453 (or 10417447 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 45.

The spelling of 73972402281 in words is "seventy-three billion, nine hundred seventy-two million, four hundred two thousand, two hundred eighty-one".