72253141503540 has 48 divisors (see below), whose sum is σ = 202350415787520. Its totient is φ = 19263540631680.

The previous prime is 72253141503449. The next prime is 72253141503563. The reversal of 72253141503540 is 4530514135227.

It is a junction number, because it is equal to n+sod(n) for n = 72253141503492 and 72253141503501.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 123573700 + ... + 124157019.

It is an arithmetic number, because the mean of its divisors is an integer number (4215633662240).

Almost surely, 2^{72253141503540} is an apocalyptic number.

It is an amenable number.

72253141503540 is an abundant number, since it is smaller than the sum of its proper divisors (130097274283980).

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

72253141503540 is a wasteful number, since it uses less digits than its factorization.

72253141503540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247735592 (or 247735590 counting only the distinct ones).

The product of its (nonzero) digits is 504000, while the sum is 42.

Adding to 72253141503540 its reverse (4530514135227), we get a palindrome (76783655638767).

The spelling of 72253141503540 in words is "seventy-two trillion, two hundred fifty-three billion, one hundred forty-one million, five hundred three thousand, five hundred forty".