20154145414542 has 32 divisors (see below), whose sum is σ = 41245085819808. Its totient is φ = 6563004005376.

The previous prime is 20154145414541. The next prime is 20154145414561. The reversal of 20154145414542 is 24541454145102.

It is a junction number, because it is equal to n+sod(n) for n = 20154145414494 and 20154145414503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20154145414541) 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, 135929803 + ... + 136077990.

It is an arithmetic number, because the mean of its divisors is an integer number (1288908931869).

Almost surely, 2^{20154145414542} is an apocalyptic number.

20154145414542 is an abundant number, since it is smaller than the sum of its proper divisors (21090940405266).

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

20154145414542 is a wasteful number, since it uses less digits than its factorization.

20154145414542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272008084.

The product of its (nonzero) digits is 512000, while the sum is 42.

Adding to 20154145414542 its reverse (24541454145102), we get a palindrome (44695599559644).

The spelling of 20154145414542 in words is "twenty trillion, one hundred fifty-four billion, one hundred forty-five million, four hundred fourteen thousand, five hundred forty-two".