72373856890403 has 8 divisors (see below), whose sum is σ = 72391765854240. Its totient is φ = 72355949265600.

The previous prime is 72373856890367. The next prime is 72373856890453. The reversal of 72373856890403 is 30409865837327.

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

It is a cyclic number.

It is not a de Polignac number, because 72373856890403 - 2⁶ = 72373856890339 is a prime.

It is a super-2 number, since 2×72373856890403² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 72373856890403.

It is not an unprimeable number, because it can be changed into a prime (72373856890453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 112448033 + ... + 113089821.

It is an arithmetic number, because the mean of its divisors is an integer number (9048970731780).

Almost surely, 2^{72373856890403} is an apocalyptic number.

72373856890403 is a deficient number, since it is larger than the sum of its proper divisors (17908963837).

72373856890403 is a wasteful number, since it uses less digits than its factorization.

72373856890403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 669517.

The product of its (nonzero) digits is 182891520, while the sum is 65.

The spelling of 72373856890403 in words is "seventy-two trillion, three hundred seventy-three billion, eight hundred fifty-six million, eight hundred ninety thousand, four hundred three".