20541543623460 has 96 divisors (see below), whose sum is σ = 64410229739520. Its totient is φ = 5434613097984.

The previous prime is 20541543623437. The next prime is 20541543623509. The reversal of 20541543623460 is 6432634514502.

20541543623460 is a `hidden beast` number, since 2 + 0 + 5 + 4 + 1 + 543 + 62 + 3 + 46 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 149694789 + ... + 149831948.

It is an arithmetic number, because the mean of its divisors is an integer number (670939893120).

Almost surely, 2^{20541543623460} is an apocalyptic number.

20541543623460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20541543623460 is an abundant number, since it is smaller than the sum of its proper divisors (43868686116060).

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

20541543623460 is a wasteful number, since it uses less digits than its factorization.

20541543623460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 299526882 (or 299526874 counting only the distinct ones).

The product of its (nonzero) digits is 2073600, while the sum is 45.

The spelling of 20541543623460 in words is "twenty trillion, five hundred forty-one billion, five hundred forty-three million, six hundred twenty-three thousand, four hundred sixty".