2151154144242 has 24 divisors (see below), whose sum is σ = 4863478935744. Its totient is φ = 685875234264.

The previous prime is 2151154144231. The next prime is 2151154144259. The reversal of 2151154144242 is 2424414511512.

It is a happy number.

2151154144242 is a `hidden beast` number, since 2 + 1 + 51 + 1 + 541 + 44 + 24 + 2 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 2151154144197 and 2151154144206.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2598011838 + ... + 2598012665.

It is an arithmetic number, because the mean of its divisors is an integer number (202644955656).

Almost surely, 2^{2151154144242} is an apocalyptic number.

2151154144242 is an abundant number, since it is smaller than the sum of its proper divisors (2712324791502).

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

2151154144242 is a wasteful number, since it uses less digits than its factorization.

2151154144242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5196024534 (or 5196024531 counting only the distinct ones).

The product of its digits is 51200, while the sum is 36.

Adding to 2151154144242 its reverse (2424414511512), we get a palindrome (4575568655754).

The spelling of 2151154144242 in words is "two trillion, one hundred fifty-one billion, one hundred fifty-four million, one hundred forty-four thousand, two hundred forty-two".