136400404349 has 24 divisors (see below), whose sum is σ = 165649095360. Its totient is φ = 111632005760.

The previous prime is 136400404337. The next prime is 136400404367. The reversal of 136400404349 is 943404004631.

It is not a de Polignac number, because 136400404349 - 2¹⁶ = 136400338813 is a prime.

It is a super-2 number, since 2×136400404349² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136400404319) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1394219 + ... + 1488840.

It is an arithmetic number, because the mean of its divisors is an integer number (6902045640).

Almost surely, 2^136400404349 is an apocalyptic number.

It is an amenable number.

136400404349 is a deficient number, since it is larger than the sum of its proper divisors (29248691011).

136400404349 is a wasteful number, since it uses less digits than its factorization.

136400404349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2883121 (or 2883110 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 38.

The spelling of 136400404349 in words is "one hundred thirty-six billion, four hundred million, four hundred four thousand, three hundred forty-nine".