136512929721 has 8 divisors (see below), whose sum is σ = 208019702464. Its totient is φ = 78007388400.

The previous prime is 136512929713. The next prime is 136512929737. The reversal of 136512929721 is 127929215631.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 136512929721 - 2³ = 136512929713 is a prime.

It is not an unprimeable number, because it can be changed into a prime (136502929721) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3250307830 + ... + 3250307871.

It is an arithmetic number, because the mean of its divisors is an integer number (26002462808).

Almost surely, 2^136512929721 is an apocalyptic number.

It is an amenable number.

136512929721 is a deficient number, since it is larger than the sum of its proper divisors (71506772743).

136512929721 is an equidigital number, since it uses as much as digits as its factorization.

136512929721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6500615711.

The product of its digits is 408240, while the sum is 48.

The spelling of 136512929721 in words is "one hundred thirty-six billion, five hundred twelve million, nine hundred twenty-nine thousand, seven hundred twenty-one".