426646377530251 has 4 divisors (see below), whose sum is σ = 426656054948112. Its totient is φ = 426636700112392.

The previous prime is 426646377530231. The next prime is 426646377530281. The reversal of 426646377530251 is 152035773646624.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 426646377530251 - 2⁷ = 426646377530123 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 426646377530251.

It is not an unprimeable number, because it can be changed into a prime (426646377530201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4838642800 + ... + 4838730973.

It is an arithmetic number, because the mean of its divisors is an integer number (106664013737028).

Almost surely, 2^{426646377530251} is an apocalyptic number.

426646377530251 is a deficient number, since it is larger than the sum of its proper divisors (9677417861).

426646377530251 is an equidigital number, since it uses as much as digits as its factorization.

426646377530251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9677417860.

The product of its (nonzero) digits is 152409600, while the sum is 61.

The spelling of 426646377530251 in words is "four hundred twenty-six trillion, six hundred forty-six billion, three hundred seventy-seven million, five hundred thirty thousand, two hundred fifty-one".