72763247544 has 128 divisors (see below), whose sum is σ = 207536696640. Its totient is φ = 21060329472.

The previous prime is 72763247519. The next prime is 72763247551. The reversal of 72763247544 is 44574236727.

It is a Harshad number since it is a multiple of its sum of digits (51).

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, 19161454 + ... + 19165250.

Almost surely, 2^72763247544 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 72763247544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (103768348320).

72763247544 is an abundant number, since it is smaller than the sum of its proper divisors (134773449096).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

72763247544 is a wasteful number, since it uses less digits than its factorization.

72763247544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7449 (or 7445 counting only the distinct ones).

The product of its digits is 7902720, while the sum is 51.

The spelling of 72763247544 in words is "seventy-two billion, seven hundred sixty-three million, two hundred forty-seven thousand, five hundred forty-four".