135440746872 has 16 divisors (see below), whose sum is σ = 338601867240. Its totient is φ = 45146915616.

The previous prime is 135440746871. The next prime is 135440746879. The reversal of 135440746872 is 278647044531.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135440746871) 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, 2821682203 + ... + 2821682250.

Almost surely, 2^135440746872 is an apocalyptic number.

135440746872 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

135440746872 is an abundant number, since it is smaller than the sum of its proper divisors (203161120368).

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

135440746872 is a wasteful number, since it uses less digits than its factorization.

135440746872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5643364462 (or 5643364458 counting only the distinct ones).

The product of its (nonzero) digits is 4515840, while the sum is 51.

The spelling of 135440746872 in words is "one hundred thirty-five billion, four hundred forty million, seven hundred forty-six thousand, eight hundred seventy-two".