1626645250427 has 4 divisors (see below), whose sum is σ = 1722330265176. Its totient is φ = 1530960235680.

The previous prime is 1626645250387. The next prime is 1626645250429. The reversal of 1626645250427 is 7240525466261.

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 1626645250427 - 2²⁸ = 1626376814971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1626645250429) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47842507349 + ... + 47842507382.

It is an arithmetic number, because the mean of its divisors is an integer number (430582566294).

Almost surely, 2^{1626645250427} is an apocalyptic number.

1626645250427 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

1626645250427 is a deficient number, since it is larger than the sum of its proper divisors (95685014749).

1626645250427 is an equidigital number, since it uses as much as digits as its factorization.

1626645250427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95685014748.

The product of its (nonzero) digits is 4838400, while the sum is 50.

The spelling of 1626645250427 in words is "one trillion, six hundred twenty-six billion, six hundred forty-five million, two hundred fifty thousand, four hundred twenty-seven".