136270800721 has 4 divisors (see below), whose sum is σ = 148659055344. Its totient is φ = 123882546100.

The previous prime is 136270800719. The next prime is 136270800767. The reversal of 136270800721 is 127008072631.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 136270800721 - 2¹ = 136270800719 is a prime.

It is a super-2 number, since 2×136270800721² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (136270810721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6194127295 + ... + 6194127316.

It is an arithmetic number, because the mean of its divisors is an integer number (37164763836).

Almost surely, 2^136270800721 is an apocalyptic number.

136270800721 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

136270800721 is a deficient number, since it is larger than the sum of its proper divisors (12388254623).

136270800721 is a wasteful number, since it uses less digits than its factorization.

136270800721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12388254622.

The product of its (nonzero) digits is 28224, while the sum is 37.

The spelling of 136270800721 in words is "one hundred thirty-six billion, two hundred seventy million, eight hundred thousand, seven hundred twenty-one".