16311697620 has 96 divisors (see below), whose sum is σ = 46442833920. Its totient is φ = 4276782720.

The previous prime is 16311697613. The next prime is 16311697627. The reversal of 16311697620 is 2679611361.

It is an interprime number because it is at equal distance from previous prime (16311697613) and next prime (16311697627).

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16311697627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1609489 + ... + 1619591.

It is an arithmetic number, because the mean of its divisors is an integer number (483779520).

Almost surely, 2^16311697620 is an apocalyptic number.

16311697620 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 16311697620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23221416960).

16311697620 is an abundant number, since it is smaller than the sum of its proper divisors (30131136300).

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

16311697620 is a wasteful number, since it uses less digits than its factorization.

16311697620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10565 (or 10563 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 42.

The spelling of 16311697620 in words is "sixteen billion, three hundred eleven million, six hundred ninety-seven thousand, six hundred twenty".