54021656475 has 36 divisors (see below), whose sum is σ = 96832678800. Its totient is φ = 28789548480.

The previous prime is 54021656459. The next prime is 54021656477. The reversal of 54021656475 is 57465612045.

54021656475 is a `hidden beast` number, since 5 + 4 + 0 + 2 + 16 + 564 + 75 = 666.

It is not a de Polignac number, because 54021656475 - 2⁴ = 54021656459 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 54021656475.

It is not an unprimeable number, because it can be changed into a prime (54021656477) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 205761 + ... + 387789.

Almost surely, 2^54021656475 is an apocalyptic number.

54021656475 is a deficient number, since it is larger than the sum of its proper divisors (42811022325).

54021656475 is a wasteful number, since it uses less digits than its factorization.

54021656475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183364 (or 183356 counting only the distinct ones).

The product of its (nonzero) digits is 1008000, while the sum is 45.

The spelling of 54021656475 in words is "fifty-four billion, twenty-one million, six hundred fifty-six thousand, four hundred seventy-five".