16216951380 has 192 divisors, whose sum is σ = 53810749440. Its totient is φ = 3570448896.

The previous prime is 16216951363. The next prime is 16216951381. The reversal of 16216951380 is 8315961261.

It is a super-2 number, since 2×16216951380² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16216951381) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 6125217 + ... + 6127863.

It is an arithmetic number, because the mean of its divisors is an integer number (280264320).

Almost surely, 2^16216951380 is an apocalyptic number.

16216951380 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 16216951380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26905374720).

16216951380 is an abundant number, since it is smaller than the sum of its proper divisors (37593798060).

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

16216951380 is a wasteful number, since it uses less digits than its factorization.

16216951380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3198 (or 3196 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 42.

The spelling of 16216951380 in words is "sixteen billion, two hundred sixteen million, nine hundred fifty-one thousand, three hundred eighty".