1626140640331 has 4 divisors (see below), whose sum is σ = 1626709820872. Its totient is φ = 1625571459792.

The previous prime is 1626140640323. The next prime is 1626140640337. The reversal of 1626140640331 is 1330460416261.

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 1626140640331 - 2³ = 1626140640323 is a prime.

It is a super-2 number, since 2×1626140640331² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1626140640337) 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, 284585985 + ... + 284591698.

It is an arithmetic number, because the mean of its divisors is an integer number (406677455218).

Almost surely, 2^{1626140640331} is an apocalyptic number.

1626140640331 is a deficient number, since it is larger than the sum of its proper divisors (569180541).

1626140640331 is an equidigital number, since it uses as much as digits as its factorization.

1626140640331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 569180540.

The product of its (nonzero) digits is 62208, while the sum is 37.

The spelling of 1626140640331 in words is "one trillion, six hundred twenty-six billion, one hundred forty million, six hundred forty thousand, three hundred thirty-one".