201454512555 has 32 divisors (see below), whose sum is σ = 323502393600. Its totient is φ = 107051091840.

The previous prime is 201454512547. The next prime is 201454512557. The reversal of 201454512555 is 555215454102.

It is a happy number.

It is not a de Polignac number, because 201454512555 - 2³ = 201454512547 is a prime.

It is not an unprimeable number, because it can be changed into a prime (201454512557) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8542921 + ... + 8566469.

It is an arithmetic number, because the mean of its divisors is an integer number (10109449800).

Almost surely, 2^201454512555 is an apocalyptic number.

201454512555 is a deficient number, since it is larger than the sum of its proper divisors (122047881045).

201454512555 is a wasteful number, since it uses less digits than its factorization.

201454512555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25611.

The product of its (nonzero) digits is 200000, while the sum is 39.

Adding to 201454512555 its reverse (555215454102), we get a palindrome (756669966657).

The spelling of 201454512555 in words is "two hundred one billion, four hundred fifty-four million, five hundred twelve thousand, five hundred fifty-five".