72554561044453 has 4 divisors (see below), whose sum is σ = 72565244980128. Its totient is φ = 72543877108780.

The previous prime is 72554561044447. The next prime is 72554561044481. The reversal of 72554561044453 is 35444016545527.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 72554561044453 - 2¹³ = 72554561036261 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 72554561044394 and 72554561044403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72554561044423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5341957651 + ... + 5341971232.

It is an arithmetic number, because the mean of its divisors is an integer number (18141311245032).

Almost surely, 2^{72554561044453} is an apocalyptic number.

It is an amenable number.

72554561044453 is a deficient number, since it is larger than the sum of its proper divisors (10683935675).

72554561044453 is a wasteful number, since it uses less digits than its factorization.

72554561044453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10683935674.

The product of its (nonzero) digits is 40320000, while the sum is 55.

The spelling of 72554561044453 in words is "seventy-two trillion, five hundred fifty-four billion, five hundred sixty-one million, forty-four thousand, four hundred fifty-three".