1660422663620 has 96 divisors (see below), whose sum is σ = 4052517520128. Its totient is φ = 559694333952.

The previous prime is 1660422663611. The next prime is 1660422663637. The reversal of 1660422663620 is 263662240661.

It is a super-3 number, since 3×1660422663620³ (a number of 38 digits) contains 333 as substring.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 2939327 + ... + 3458393.

It is an arithmetic number, because the mean of its divisors is an integer number (42213724168).

Almost surely, 2^{1660422663620} is an apocalyptic number.

1660422663620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1660422663620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2026258760064).

1660422663620 is an abundant number, since it is smaller than the sum of its proper divisors (2392094856508).

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

1660422663620 is a wasteful number, since it uses less digits than its factorization.

1660422663620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 519469 (or 519467 counting only the distinct ones).

The product of its (nonzero) digits is 746496, while the sum is 44.

The spelling of 1660422663620 in words is "one trillion, six hundred sixty billion, four hundred twenty-two million, six hundred sixty-three thousand, six hundred twenty".