54643051620 has 36 divisors (see below), whose sum is σ = 165750590460. Its totient is φ = 14571480384.

The previous prime is 54643051607. The next prime is 54643051633. The reversal of 54643051620 is 2615034645.

54643051620 is a `hidden beast` number, since 5 + 4 + 643 + 0 + 5 + 1 + 6 + 2 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (54643051607) and next prime (54643051633).

It can be written as a sum of positive squares in 2 ways, for example, as 31182615396 + 23460436224 = 176586^2 + 153168^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

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 11 ways as a sum of consecutive naturals, for example, 151786075 + ... + 151786434.

Almost surely, 2^54643051620 is an apocalyptic number.

It is an amenable number.

54643051620 is an abundant number, since it is smaller than the sum of its proper divisors (111107538840).

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

54643051620 is a wasteful number, since it uses less digits than its factorization.

54643051620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 303572524 (or 303572519 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

The spelling of 54643051620 in words is "fifty-four billion, six hundred forty-three million, fifty-one thousand, six hundred twenty".