254405121155 has 16 divisors (see below), whose sum is σ = 313584372864. Its totient is φ = 198019000320.

The previous prime is 254405121151. The next prime is 254405121167. The reversal of 254405121155 is 551121504452.

It is not a de Polignac number, because 254405121155 - 2² = 254405121151 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (254405121151) 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, 1615502 + ... + 1765971.

It is an arithmetic number, because the mean of its divisors is an integer number (19599023304).

Almost surely, 2^254405121155 is an apocalyptic number.

254405121155 is a deficient number, since it is larger than the sum of its proper divisors (59179251709).

254405121155 is a wasteful number, since it uses less digits than its factorization.

254405121155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3381886.

The product of its (nonzero) digits is 40000, while the sum is 35.

The spelling of 254405121155 in words is "two hundred fifty-four billion, four hundred five million, one hundred twenty-one thousand, one hundred fifty-five".