20540552542401 has 32 divisors (see below), whose sum is σ = 27892063682560. Its totient is φ = 13444069768704.

The previous prime is 20540552542339. The next prime is 20540552542429. The reversal of 20540552542401 is 10424525504502.

It is not a de Polignac number, because 20540552542401 - 2²³ = 20540544153793 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20540552542401.

It is not an unprimeable number, because it can be changed into a prime (20540552542501) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17805480 + ... + 18923958.

It is an arithmetic number, because the mean of its divisors is an integer number (871626990080).

Almost surely, 2^{20540552542401} is an apocalyptic number.

It is an amenable number.

20540552542401 is a deficient number, since it is larger than the sum of its proper divisors (7351511140159).

20540552542401 is a wasteful number, since it uses less digits than its factorization.

20540552542401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1119085.

The product of its (nonzero) digits is 320000, while the sum is 39.

The spelling of 20540552542401 in words is "twenty trillion, five hundred forty billion, five hundred fifty-two million, five hundred forty-two thousand, four hundred one".