20315135255454 has 96 divisors (see below), whose sum is σ = 48233163756960. Its totient is φ = 6141684231936.

The previous prime is 20315135255449. The next prime is 20315135255473. The reversal of 20315135255454 is 45455253151302.

20315135255454 is a `hidden beast` number, since 2 + 0 + 3 + 1 + 51 + 3 + 52 + 5 + 545 + 4 = 666.

It is a super-2 number, since 2×20315135255454² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4433224 + ... + 7764260.

It is an arithmetic number, because the mean of its divisors is an integer number (502428789135).

Almost surely, 2^{20315135255454} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20315135255454, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24116581878480).

20315135255454 is an abundant number, since it is smaller than the sum of its proper divisors (27918028501506).

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

20315135255454 is a wasteful number, since it uses less digits than its factorization.

20315135255454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3331514 (or 3331511 counting only the distinct ones).

The product of its (nonzero) digits is 1800000, while the sum is 45.

The spelling of 20315135255454 in words is "twenty trillion, three hundred fifteen billion, one hundred thirty-five million, two hundred fifty-five thousand, four hundred fifty-four".