72145427750 has 64 divisors (see below), whose sum is σ = 147400860672. Its totient is φ = 26222812000.

The previous prime is 72145427741. The next prime is 72145427771. The reversal of 72145427750 is 5772454127.

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, 8044769 + ... + 8053731.

It is an arithmetic number, because the mean of its divisors is an integer number (2303138448).

Almost surely, 2^72145427750 is an apocalyptic number.

72145427750 is an abundant number, since it is smaller than the sum of its proper divisors (75255432922).

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

72145427750 is a wasteful number, since it uses less digits than its factorization.

72145427750 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11918 (or 11908 counting only the distinct ones).

The product of its (nonzero) digits is 548800, while the sum is 44.

The spelling of 72145427750 in words is "seventy-two billion, one hundred forty-five million, four hundred twenty-seven thousand, seven hundred fifty".