72145241245 has 32 divisors (see below), whose sum is σ = 110854008576. Its totient is φ = 43758144000.

The previous prime is 72145241227. The next prime is 72145241263. The reversal of 72145241245 is 54214254127.

It is an interprime number because it is at equal distance from previous prime (72145241227) and next prime (72145241263).

It is not a de Polignac number, because 72145241245 - 2⁹ = 72145240733 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

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, 2518056 + ... + 2546545.

It is an arithmetic number, because the mean of its divisors is an integer number (3464187768).

Almost surely, 2^72145241245 is an apocalyptic number.

It is an amenable number.

72145241245 is a deficient number, since it is larger than the sum of its proper divisors (38708767331).

72145241245 is a wasteful number, since it uses less digits than its factorization.

72145241245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5064661.

The product of its digits is 89600, while the sum is 37.

The spelling of 72145241245 in words is "seventy-two billion, one hundred forty-five million, two hundred forty-one thousand, two hundred forty-five".