72775723735 has 32 divisors (see below), whose sum is σ = 106136412480. Its totient is φ = 47171712000.

The previous prime is 72775723717. The next prime is 72775723771. The reversal of 72775723735 is 53732757727.

It is not a de Polignac number, because 72775723735 - 2¹⁷ = 72775592663 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (55).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1734166 + ... + 1775635.

It is an arithmetic number, because the mean of its divisors is an integer number (3316762890).

Almost surely, 2^72775723735 is an apocalyptic number.

72775723735 is a deficient number, since it is larger than the sum of its proper divisors (33360688745).

72775723735 is a wasteful number, since it uses less digits than its factorization.

72775723735 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3509859.

The product of its digits is 15126300, while the sum is 55.

The spelling of 72775723735 in words is "seventy-two billion, seven hundred seventy-five million, seven hundred twenty-three thousand, seven hundred thirty-five".