156394428180440 has 16 divisors (see below), whose sum is σ = 351887463406080. Its totient is φ = 62557771272160.

The previous prime is 156394428180437. The next prime is 156394428180451. The reversal of 156394428180440 is 44081824493651.

It is a self number, because there is not a number n which added to its sum of digits gives 156394428180440.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1954930352216 + ... + 1954930352295.

It is an arithmetic number, because the mean of its divisors is an integer number (21992966462880).

Almost surely, 2^{156394428180440} is an apocalyptic number.

156394428180440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

156394428180440 is an abundant number, since it is smaller than the sum of its proper divisors (195493035225640).

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

156394428180440 is a wasteful number, since it uses less digits than its factorization.

156394428180440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3909860704522 (or 3909860704518 counting only the distinct ones).

The product of its (nonzero) digits is 26542080, while the sum is 59.

The spelling of 156394428180440 in words is "one hundred fifty-six trillion, three hundred ninety-four billion, four hundred twenty-eight million, one hundred eighty thousand, four hundred forty".