72929372293 has 4 divisors (see below), whose sum is σ = 73651445388. Its totient is φ = 72207299200.

The previous prime is 72929372291. The next prime is 72929372317. The reversal of 72929372293 is 39227392927.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 39227392927 = 353 ⋅111125759.

It can be written as a sum of positive squares in 2 ways, for example, as 65207708164 + 7721664129 = 255358^2 + 87873^2 .

It is a cyclic number.

It is not a de Polignac number, because 72929372293 - 2¹ = 72929372291 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 (72929372291) 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, 361036396 + ... + 361036597.

It is an arithmetic number, because the mean of its divisors is an integer number (18412861347).

Almost surely, 2^72929372293 is an apocalyptic number.

It is an amenable number.

72929372293 is a deficient number, since it is larger than the sum of its proper divisors (722073095).

72929372293 is a wasteful number, since it uses less digits than its factorization.

72929372293 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 722073094.

The product of its digits is 5143824, while the sum is 55.

The spelling of 72929372293 in words is "seventy-two billion, nine hundred twenty-nine million, three hundred seventy-two thousand, two hundred ninety-three".