1797627220340 has 48 divisors (see below), whose sum is σ = 4378697968512. Its totient is φ = 607130384256.

The previous prime is 1797627220261. The next prime is 1797627220343. The reversal of 1797627220340 is 430227267971.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1797627220343) 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, 95812967 + ... + 95831726.

It is an arithmetic number, because the mean of its divisors is an integer number (91222874344).

Almost surely, 2^{1797627220340} is an apocalyptic number.

1797627220340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1797627220340 is an abundant number, since it is smaller than the sum of its proper divisors (2581070748172).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1797627220340 is a wasteful number, since it uses less digits than its factorization.

1797627220340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191644776 (or 191644774 counting only the distinct ones).

The product of its (nonzero) digits is 1778112, while the sum is 50.

The spelling of 1797627220340 in words is "one trillion, seven hundred ninety-seven billion, six hundred twenty-seven million, two hundred twenty thousand, three hundred forty".