20101455255541 has 16 divisors (see below), whose sum is σ = 23141154519360. Its totient is φ = 17268650340480.

The previous prime is 20101455255533. The next prime is 20101455255601. The reversal of 20101455255541 is 14555255410102.

It is not a de Polignac number, because 20101455255541 - 2³ = 20101455255533 is a prime.

It is a super-2 number, since 2×20101455255541² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20101455255494 and 20101455255503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20101455255521) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 121049536 + ... + 121215481.

It is an arithmetic number, because the mean of its divisors is an integer number (1446322157460).

Almost surely, 2^{20101455255541} is an apocalyptic number.

It is an amenable number.

20101455255541 is a deficient number, since it is larger than the sum of its proper divisors (3039699263819).

20101455255541 is a wasteful number, since it uses less digits than its factorization.

20101455255541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242265444.

The product of its (nonzero) digits is 200000, while the sum is 40.

The spelling of 20101455255541 in words is "twenty trillion, one hundred one billion, four hundred fifty-five million, two hundred fifty-five thousand, five hundred forty-one".