133923689615 has 16 divisors (see below), whose sum is σ = 170174081952. Its totient is φ = 100829420544.

The previous prime is 133923689611. The next prime is 133923689621. The reversal of 133923689615 is 516986329331.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 133923689615 - 2² = 133923689611 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133923689611) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1334267 + ... + 1431123.

It is an arithmetic number, because the mean of its divisors is an integer number (10635880122).

Almost surely, 2^133923689615 is an apocalyptic number.

133923689615 is a deficient number, since it is larger than the sum of its proper divisors (36250392337).

133923689615 is a wasteful number, since it uses less digits than its factorization.

133923689615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113146.

The product of its digits is 6298560, while the sum is 56.

The spelling of 133923689615 in words is "one hundred thirty-three billion, nine hundred twenty-three million, six hundred eighty-nine thousand, six hundred fifteen".