54666019971 has 48 divisors (see below), whose sum is σ = 83444961600. Its totient is φ = 34417633536.

The previous prime is 54666019957. The next prime is 54666019999. The reversal of 54666019971 is 17991066645.

It is a happy number.

It is not a de Polignac number, because 54666019971 - 2¹⁰ = 54666018947 is a prime.

It is not an unprimeable number, because it can be changed into a prime (54666019951) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6606825 + ... + 6615093.

It is an arithmetic number, because the mean of its divisors is an integer number (1738436700).

Almost surely, 2^54666019971 is an apocalyptic number.

54666019971 is a deficient number, since it is larger than the sum of its proper divisors (28778941629).

54666019971 is a wasteful number, since it uses less digits than its factorization.

54666019971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8700 (or 8697 counting only the distinct ones).

The product of its (nonzero) digits is 2449440, while the sum is 54.

The spelling of 54666019971 in words is "fifty-four billion, six hundred sixty-six million, nineteen thousand, nine hundred seventy-one".