201454115511251 has 16 divisors (see below), whose sum is σ = 215407338271200. Its totient is φ = 188076084403200.

The previous prime is 201454115511247. The next prime is 201454115511289. The reversal of 201454115511251 is 152115511454102.

It is not a de Polignac number, because 201454115511251 - 2² = 201454115511247 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201454115511211) 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, 964982270 + ... + 965191011.

It is an arithmetic number, because the mean of its divisors is an integer number (13462958641950).

Almost surely, 2^{201454115511251} is an apocalyptic number.

201454115511251 is a deficient number, since it is larger than the sum of its proper divisors (13953222759949).

201454115511251 is a wasteful number, since it uses less digits than its factorization.

201454115511251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1930173430.

The product of its (nonzero) digits is 40000, while the sum is 38.

Adding to 201454115511251 its reverse (152115511454102), we get a palindrome (353569626965353).

The spelling of 201454115511251 in words is "two hundred one trillion, four hundred fifty-four billion, one hundred fifteen million, five hundred eleven thousand, two hundred fifty-one".