154240255211251 has 16 divisors (see below), whose sum is σ = 168445415255040. Its totient is φ = 140065718696320.

The previous prime is 154240255211243. The next prime is 154240255211281. The reversal of 154240255211251 is 152112552042451.

It is a cyclic number.

It is not a de Polignac number, because 154240255211251 - 2³ = 154240255211243 is a prime.

It is not an unprimeable number, because it can be changed into a prime (154240255211201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42102411 + ... + 45619003.

It is an arithmetic number, because the mean of its divisors is an integer number (10527838453440).

Almost surely, 2^{154240255211251} is an apocalyptic number.

154240255211251 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

154240255211251 is a deficient number, since it is larger than the sum of its proper divisors (14205160043789).

154240255211251 is a wasteful number, since it uses less digits than its factorization.

154240255211251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3520946.

The product of its (nonzero) digits is 160000, while the sum is 40.

The spelling of 154240255211251 in words is "one hundred fifty-four trillion, two hundred forty billion, two hundred fifty-five million, two hundred eleven thousand, two hundred fifty-one".