136401491274 has 16 divisors (see below), whose sum is σ = 272833099680. Its totient is φ = 45462144240.

The previous prime is 136401491249. The next prime is 136401491311. The reversal of 136401491274 is 472194104631.

It is a happy number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1195789 + ... + 1304880.

It is an arithmetic number, because the mean of its divisors is an integer number (17052068730).

Almost surely, 2^136401491274 is an apocalyptic number.

136401491274 is an abundant number, since it is smaller than the sum of its proper divisors (136431608406).

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

136401491274 is a wasteful number, since it uses less digits than its factorization.

136401491274 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2509765.

The product of its (nonzero) digits is 145152, while the sum is 42.

The spelling of 136401491274 in words is "one hundred thirty-six billion, four hundred one million, four hundred ninety-one thousand, two hundred seventy-four".