72470230793173 has 4 divisors (see below), whose sum is σ = 73551876028960. Its totient is φ = 71388585557388.

The previous prime is 72470230793171. The next prime is 72470230793203. The reversal of 72470230793173 is 37139703207427.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 72470230793173 - 2¹ = 72470230793171 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 (72470230793171) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 540822617793 + ... + 540822617926.

It is an arithmetic number, because the mean of its divisors is an integer number (18387969007240).

Almost surely, 2^{72470230793173} is an apocalyptic number.

It is an amenable number.

72470230793173 is a deficient number, since it is larger than the sum of its proper divisors (1081645235787).

72470230793173 is a wasteful number, since it uses less digits than its factorization.

72470230793173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1081645235786.

The product of its (nonzero) digits is 9335088, while the sum is 55.

The spelling of 72470230793173 in words is "seventy-two trillion, four hundred seventy billion, two hundred thirty million, seven hundred ninety-three thousand, one hundred seventy-three".