16378725880 has 64 divisors (see below), whose sum is σ = 40768634880. Its totient is φ = 5872003200.

The previous prime is 16378725859. The next prime is 16378725911. The reversal of 16378725880 is 8852787361.

It is a happy number.

It is a super-2 number, since 2×16378725880² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (55).

It is a congruent number.

It is an unprimeable number.

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, 230904 + ... + 293383.

It is an arithmetic number, because the mean of its divisors is an integer number (637009920).

Almost surely, 2^16378725880 is an apocalyptic number.

16378725880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16378725880 is an abundant number, since it is smaller than the sum of its proper divisors (24389909000).

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

16378725880 is a wasteful number, since it uses less digits than its factorization.

16378725880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 524380 (or 524376 counting only the distinct ones).

The product of its (nonzero) digits is 4515840, while the sum is 55.

The spelling of 16378725880 in words is "sixteen billion, three hundred seventy-eight million, seven hundred twenty-five thousand, eight hundred eighty".