72734665534 has 8 divisors (see below), whose sum is σ = 109118672208. Its totient is φ = 36361774800.

The previous prime is 72734665501. The next prime is 72734665559. The reversal of 72734665534 is 43556643727.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2762607 + ... + 2788810.

It is an arithmetic number, because the mean of its divisors is an integer number (13639834026).

Almost surely, 2^72734665534 is an apocalyptic number.

72734665534 is a deficient number, since it is larger than the sum of its proper divisors (36384006674).

72734665534 is a wasteful number, since it uses less digits than its factorization.

72734665534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5557970.

The product of its digits is 12700800, while the sum is 52.

The spelling of 72734665534 in words is "seventy-two billion, seven hundred thirty-four million, six hundred sixty-five thousand, five hundred thirty-four".