16664635140 has 96 divisors (see below), whose sum is σ = 49922221440. Its totient is φ = 4140979200.

The previous prime is 16664635133. The next prime is 16664635147. The reversal of 16664635140 is 4153646661.

It is an interprime number because it is at equal distance from previous prime (16664635133) and next prime (16664635147).

It is a junction number, because it is equal to n+sod(n) for n = 16664635092 and 16664635101.

It is not an unprimeable number, because it can be changed into a prime (16664635147) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 50281 + ... + 189360.

It is an arithmetic number, because the mean of its divisors is an integer number (520023140).

Almost surely, 2^16664635140 is an apocalyptic number.

16664635140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16664635140 is an abundant number, since it is smaller than the sum of its proper divisors (33257586300).

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

16664635140 is a wasteful number, since it uses less digits than its factorization.

16664635140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239733 (or 239731 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 42.

The spelling of 16664635140 in words is "sixteen billion, six hundred sixty-four million, six hundred thirty-five thousand, one hundred forty".