72436314737 has 4 divisors (see below), whose sum is σ = 74120880240. Its totient is φ = 70751749236.

The previous prime is 72436314733. The next prime is 72436314767. The reversal of 72436314737 is 73741363427.

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 72436314737 - 2² = 72436314733 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 72436314691 and 72436314700.

It is not an unprimeable number, because it can be changed into a prime (72436314733) 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, 842282687 + ... + 842282772.

It is an arithmetic number, because the mean of its divisors is an integer number (18530220060).

Almost surely, 2^72436314737 is an apocalyptic number.

It is an amenable number.

72436314737 is a deficient number, since it is larger than the sum of its proper divisors (1684565503).

72436314737 is a wasteful number, since it uses less digits than its factorization.

72436314737 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1684565502.

The product of its digits is 1778112, while the sum is 47.

The spelling of 72436314737 in words is "seventy-two billion, four hundred thirty-six million, three hundred fourteen thousand, seven hundred thirty-seven".