16388465740 has 24 divisors (see below), whose sum is σ = 34509569472. Its totient is φ = 6537521280.

The previous prime is 16388465729. The next prime is 16388465771. The reversal of 16388465740 is 4756488361.

It is a super-2 number, since 2×16388465740² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1109041 + ... + 1123720.

It is an arithmetic number, because the mean of its divisors is an integer number (1437898728).

Almost surely, 2^16388465740 is an apocalyptic number.

16388465740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16388465740 is an abundant number, since it is smaller than the sum of its proper divisors (18121103732).

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

16388465740 is a wasteful number, since it uses less digits than its factorization.

16388465740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2233137 (or 2233135 counting only the distinct ones).

The product of its (nonzero) digits is 3870720, while the sum is 52.

The spelling of 16388465740 in words is "sixteen billion, three hundred eighty-eight million, four hundred sixty-five thousand, seven hundred forty".