16031981700 has 540 divisors, whose sum is σ = 62452169472. Its totient is φ = 3543523200.

The previous prime is 16031981659. The next prime is 16031981717. The reversal of 16031981700 is 718913061.

It is a tau number, because it is divible by the number of its divisors (540).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 179 ways as a sum of consecutive naturals, for example, 12303249 + ... + 12304551.

Almost surely, 2^16031981700 is an apocalyptic number.

16031981700 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 16031981700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31226084736).

16031981700 is an abundant number, since it is smaller than the sum of its proper divisors (46420187772).

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

16031981700 is a wasteful number, since it uses less digits than its factorization.

16031981700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1374 (or 1351 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 36.

The spelling of 16031981700 in words is "sixteen billion, thirty-one million, nine hundred eighty-one thousand, seven hundred".