54921379522816 has 27 divisors (see below), whose sum is σ = 109628459092873. Its totient is φ = 27460630474240.

The previous prime is 54921379522811. The next prime is 54921379522817. The reversal of 54921379522816 is 61822597312945.

The square root of 54921379522816 is 7410896.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 42069441321216 + 12851938201600 = 6486096^2 + 3584960^2 .

It is a Harshad number since it is a multiple of its sum of digits (64).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (54921379522811) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 118342746 + ... + 118805926.

Almost surely, 2^{54921379522816} is an apocalyptic number.

54921379522816 is the 7410896-th square number.

It is an amenable number.

54921379522816 is a deficient number, since it is larger than the sum of its proper divisors (54707079570057).

54921379522816 is an frugal number, since it uses more digits than its factorization.

54921379522816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 926378 (or 463183 counting only the distinct ones).

The product of its digits is 65318400, while the sum is 64.

54921379522816 divided by its sum of digits (64) gives a square (858146555044 = 926362²).

The spelling of 54921379522816 in words is "fifty-four trillion, nine hundred twenty-one billion, three hundred seventy-nine million, five hundred twenty-two thousand, eight hundred sixteen".