55020203686845 has 64 divisors (see below), whose sum is σ = 99925083095040. Its totient is φ = 28711070409024.

The previous prime is 55020203686831. The next prime is 55020203686873. The reversal of 55020203686845 is 54868630202055.

55020203686845 is a `hidden beast` number, since 5 + 502 + 0 + 2 + 0 + 36 + 8 + 68 + 45 = 666.

It is not a de Polignac number, because 55020203686845 - 2⁴ = 55020203686829 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 55020203686791 and 55020203686800.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 19671844 + ... + 22293986.

It is an arithmetic number, because the mean of its divisors is an integer number (1561329423360).

Almost surely, 2^{55020203686845} is an apocalyptic number.

It is an amenable number.

55020203686845 is a deficient number, since it is larger than the sum of its proper divisors (44904879408195).

55020203686845 is a wasteful number, since it uses less digits than its factorization.

55020203686845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2625511 (or 2625505 counting only the distinct ones).

The product of its (nonzero) digits is 13824000, while the sum is 54.

The spelling of 55020203686845 in words is "fifty-five trillion, twenty billion, two hundred three million, six hundred eighty-six thousand, eight hundred forty-five".