420054235500251 has 16 divisors (see below), whose sum is σ = 458342329275648. Its totient is φ = 381783040816800.

The previous prime is 420054235500203. The next prime is 420054235500257. The reversal of 420054235500251 is 152005532450024.

It is a cyclic number.

It is not a de Polignac number, because 420054235500251 - 2⁶ = 420054235500187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (420054235500257) 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, 1074686666 + ... + 1075077456.

It is an arithmetic number, because the mean of its divisors is an integer number (28646395579728).

Almost surely, 2^{420054235500251} is an apocalyptic number.

420054235500251 is a deficient number, since it is larger than the sum of its proper divisors (38288093775397).

420054235500251 is a wasteful number, since it uses less digits than its factorization.

420054235500251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 412162.

The product of its (nonzero) digits is 240000, while the sum is 38.

Adding to 420054235500251 its reverse (152005532450024), we get a palindrome (572059767950275).

It can be divided in two parts, 4200542 and 35500251, that added together give a palindrome (39700793).

The spelling of 420054235500251 in words is "four hundred twenty trillion, fifty-four billion, two hundred thirty-five million, five hundred thousand, two hundred fifty-one".