16402526680 has 64 divisors (see below), whose sum is σ = 37985961600. Its totient is φ = 6371688960.

The previous prime is 16402526629. The next prime is 16402526683. The reversal of 16402526680 is 8662520461.

It is a super-2 number, since 2×16402526680² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16402526683) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 150214 + ... + 235306.

It is an arithmetic number, because the mean of its divisors is an integer number (593530650).

Almost surely, 2^16402526680 is an apocalyptic number.

16402526680 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 16402526680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18992980800).

16402526680 is an abundant number, since it is smaller than the sum of its proper divisors (21583434920).

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

16402526680 is a wasteful number, since it uses less digits than its factorization.

16402526680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85244 (or 85240 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 40.

The spelling of 16402526680 in words is "sixteen billion, four hundred two million, five hundred twenty-six thousand, six hundred eighty".