1680850512690 has 32 divisors (see below), whose sum is σ = 4271337774720. Its totient is φ = 421860520704.

The previous prime is 1680850512667. The next prime is 1680850512767. The reversal of 1680850512690 is 962150580861.

It is a super-2 number, since 2×1680850512690² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1647892150 + ... + 1647893169.

It is an arithmetic number, because the mean of its divisors is an integer number (133479305460).

Almost surely, 2^{1680850512690} is an apocalyptic number.

1680850512690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1680850512690 is an abundant number, since it is smaller than the sum of its proper divisors (2590487262030).

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

1680850512690 is a wasteful number, since it uses less digits than its factorization.

1680850512690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3295785346.

The product of its (nonzero) digits is 1036800, while the sum is 51.

The spelling of 1680850512690 in words is "one trillion, six hundred eighty billion, eight hundred fifty million, five hundred twelve thousand, six hundred ninety".