16420755831 has 16 divisors (see below), whose sum is σ = 22604172288. Its totient is φ = 10592366400.

The previous prime is 16420755823. The next prime is 16420755877. The reversal of 16420755831 is 13855702461.

It is a happy number.

It is not a de Polignac number, because 16420755831 - 2³ = 16420755823 is a prime.

It is a super-2 number, since 2×16420755831² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16420750831) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 901171 + ... + 919211.

It is an arithmetic number, because the mean of its divisors is an integer number (1412760768).

Almost surely, 2^16420755831 is an apocalyptic number.

16420755831 is a deficient number, since it is larger than the sum of its proper divisors (6183416457).

16420755831 is a wasteful number, since it uses less digits than its factorization.

16420755831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27862.

The product of its (nonzero) digits is 201600, while the sum is 42.

The spelling of 16420755831 in words is "sixteen billion, four hundred twenty million, seven hundred fifty-five thousand, eight hundred thirty-one".