1680725155926 has 64 divisors (see below), whose sum is σ = 3460998191616. Its totient is φ = 543791673600.

The previous prime is 1680725155913. The next prime is 1680725155939. The reversal of 1680725155926 is 6295515270861.

It is an interprime number because it is at equal distance from previous prime (1680725155913) and next prime (1680725155939).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 240684631 + ... + 240691613.

It is an arithmetic number, because the mean of its divisors is an integer number (54078096744).

Almost surely, 2^{1680725155926} is an apocalyptic number.

1680725155926 is an abundant number, since it is smaller than the sum of its proper divisors (1780273035690).

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

1680725155926 is a wasteful number, since it uses less digits than its factorization.

1680725155926 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11877.

The product of its (nonzero) digits is 9072000, while the sum is 57.

The spelling of 1680725155926 in words is "one trillion, six hundred eighty billion, seven hundred twenty-five million, one hundred fifty-five thousand, nine hundred twenty-six".