2251540204154 has 8 divisors (see below), whose sum is σ = 3412127938548. Its totient is φ = 1114164224640.

The previous prime is 2251540204099. The next prime is 2251540204163. The reversal of 2251540204154 is 4514020451522.

It can be written as a sum of positive squares in 2 ways, for example, as 2142754354225 + 108785849929 = 1463815^2 + 329827^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5802938477 + ... + 5802938864.

Almost surely, 2^{2251540204154} is an apocalyptic number.

2251540204154 is a deficient number, since it is larger than the sum of its proper divisors (1160587734394).

2251540204154 is a wasteful number, since it uses less digits than its factorization.

2251540204154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11605877440.

The product of its (nonzero) digits is 64000, while the sum is 35.

Adding to 2251540204154 its reverse (4514020451522), we get a palindrome (6765560655676).

The spelling of 2251540204154 in words is "two trillion, two hundred fifty-one billion, five hundred forty million, two hundred four thousand, one hundred fifty-four".