54156666980 has 48 divisors (see below), whose sum is σ = 122668835184. Its totient is φ = 19965050880.

The previous prime is 54156666943. The next prime is 54156667009. The reversal of 54156666980 is 8966665145.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 358647844 + 53798019136 = 18938^2 + 231944^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4184 + ... + 329136.

It is an arithmetic number, because the mean of its divisors is an integer number (2555600733).

Almost surely, 2^54156666980 is an apocalyptic number.

It is an amenable number.

54156666980 is an abundant number, since it is smaller than the sum of its proper divisors (68512168204).

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

54156666980 is a wasteful number, since it uses less digits than its factorization.

54156666980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 325616 (or 325614 counting only the distinct ones).

The product of its (nonzero) digits is 9331200, while the sum is 56.

The spelling of 54156666980 in words is "fifty-four billion, one hundred fifty-six million, six hundred sixty-six thousand, nine hundred eighty".