55773156020 has 24 divisors (see below), whose sum is σ = 119847434784. Its totient is φ = 21790442016.

The previous prime is 55773156001. The next prime is 55773156029. The reversal of 55773156020 is 2065137755.

It is a super-2 number, since 2×55773156020² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55773156029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32425394 + ... + 32427113.

It is an arithmetic number, because the mean of its divisors is an integer number (4993643116).

Almost surely, 2^55773156020 is an apocalyptic number.

It is an amenable number.

55773156020 is an abundant number, since it is smaller than the sum of its proper divisors (64074278764).

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

55773156020 is a wasteful number, since it uses less digits than its factorization.

55773156020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64852559 (or 64852557 counting only the distinct ones).

The product of its (nonzero) digits is 220500, while the sum is 41.

The spelling of 55773156020 in words is "fifty-five billion, seven hundred seventy-three million, one hundred fifty-six thousand, twenty".