16422249690 has 512 divisors, whose sum is σ = 57224724480. Its totient is φ = 3251923200.

The previous prime is 16422249673. The next prime is 16422249691. The reversal of 16422249690 is 9694222461.

16422249690 is a `hidden beast` number, since 16 + 42 + 22 + 496 + 90 = 666.

It is a super-2 number, since 2×16422249690² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (16422249691) by changing a digit.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 53492517 + ... + 53492823.

It is an arithmetic number, because the mean of its divisors is an integer number (111767040).

Almost surely, 2^16422249690 is an apocalyptic number.

16422249690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 16422249690, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28612362240).

16422249690 is an abundant number, since it is smaller than the sum of its proper divisors (40802474790).

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

16422249690 is a wasteful number, since it uses less digits than its factorization.

16422249690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 455 (or 449 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 45.

The spelling of 16422249690 in words is "sixteen billion, four hundred twenty-two million, two hundred forty-nine thousand, six hundred ninety".