20366846544 has 80 divisors (see below), whose sum is σ = 58948816320. Its totient is φ = 6004961280.

The previous prime is 20366846483. The next prime is 20366846579. The reversal of 20366846544 is 44564866302.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a junction number, because it is equal to n+sod(n) for n = 20366846493 and 20366846502.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 501729 + ... + 540800.

It is an arithmetic number, because the mean of its divisors is an integer number (736860204).

Almost surely, 2^20366846544 is an apocalyptic number.

20366846544 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20366846544 is an abundant number, since it is smaller than the sum of its proper divisors (38581969776).

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

20366846544 is a wasteful number, since it uses less digits than its factorization.

20366846544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1042588 (or 1042582 counting only the distinct ones).

The product of its (nonzero) digits is 3317760, while the sum is 48.

The spelling of 20366846544 in words is "twenty billion, three hundred sixty-six million, eight hundred forty-six thousand, five hundred forty-four".