54400786561 has 8 divisors (see below), whose sum is σ = 59348068704. Its totient is φ = 49453797120.

The previous prime is 54400786541. The next prime is 54400786579. The reversal of 54400786561 is 16568700445.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 54400786561 - 2¹⁵ = 54400753793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (54400786541) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 535905 + ... + 629281.

It is an arithmetic number, because the mean of its divisors is an integer number (7418508588).

Almost surely, 2^54400786561 is an apocalyptic number.

It is an amenable number.

54400786561 is a deficient number, since it is larger than the sum of its proper divisors (4947282143).

54400786561 is a wasteful number, since it uses less digits than its factorization.

54400786561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146351.

The product of its (nonzero) digits is 806400, while the sum is 46.

The spelling of 54400786561 in words is "fifty-four billion, four hundred million, seven hundred eighty-six thousand, five hundred sixty-one".