20145550054652 has 72 divisors (see below), whose sum is σ = 41050541186928. Its totient is φ = 8614211950080.

The previous prime is 20145550054639. The next prime is 20145550054661. The reversal of 20145550054652 is 25645005554102.

It is a super-2 number, since 2×20145550054652² (a number of 27 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (44) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16295783 + ... + 17488385.

It is an arithmetic number, because the mean of its divisors is an integer number (570146405374).

Almost surely, 2^{20145550054652} is an apocalyptic number.

20145550054652 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20145550054652 is an abundant number, since it is smaller than the sum of its proper divisors (20904991132276).

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

20145550054652 is a wasteful number, since it uses less digits than its factorization.

20145550054652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1194699 (or 1194686 counting only the distinct ones).

The product of its (nonzero) digits is 1200000, while the sum is 44.

Multiplying 20145550054652 by its sum of digits (44), we get a palindrome (886404202404688).

The spelling of 20145550054652 in words is "twenty trillion, one hundred forty-five billion, five hundred fifty million, fifty-four thousand, six hundred fifty-two".