20552150404540 has 12 divisors (see below), whose sum is σ = 43159515849576. Its totient is φ = 8220860161808.

The previous prime is 20552150404459. The next prime is 20552150404547. The reversal of 20552150404540 is 4540405125502.

It is a super-2 number, since 2×20552150404540² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20552150404540.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20552150404547) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 513803760094 + ... + 513803760133.

It is an arithmetic number, because the mean of its divisors is an integer number (3596626320798).

Almost surely, 2^{20552150404540} is an apocalyptic number.

20552150404540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20552150404540 is an abundant number, since it is smaller than the sum of its proper divisors (22607365445036).

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

20552150404540 is a wasteful number, since it uses less digits than its factorization.

20552150404540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1027607520236 (or 1027607520234 counting only the distinct ones).

The product of its (nonzero) digits is 160000, while the sum is 37.

The spelling of 20552150404540 in words is "twenty trillion, five hundred fifty-two billion, one hundred fifty million, four hundred four thousand, five hundred forty".