16388780070 has 48 divisors (see below), whose sum is σ = 42591446352. Its totient is φ = 4034160000.

The previous prime is 16388780033. The next prime is 16388780071. The reversal of 16388780070 is 7008788361.

It is a super-2 number, since 2×16388780070² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16388780071) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1611181 + ... + 1621320.

It is an arithmetic number, because the mean of its divisors is an integer number (887321799).

Almost surely, 2^16388780070 is an apocalyptic number.

16388780070 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16388780070 is an abundant number, since it is smaller than the sum of its proper divisors (26202666282).

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

16388780070 is a wasteful number, since it uses less digits than its factorization.

16388780070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3232537 (or 3232524 counting only the distinct ones).

The product of its (nonzero) digits is 451584, while the sum is 48.

The spelling of 16388780070 in words is "sixteen billion, three hundred eighty-eight million, seven hundred eighty thousand, seventy".