156405221360 has 40 divisors (see below), whose sum is σ = 363680758656. Its totient is φ = 62555444480.

The previous prime is 156405221359. The next prime is 156405221381. The reversal of 156405221360 is 63122504651.

156405221360 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a Cunningham number, because it is equal to 395481²-1.

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 156405221360.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 692090 + ... + 889830.

Almost surely, 2^156405221360 is an apocalyptic number.

156405221360 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

156405221360 is an abundant number, since it is smaller than the sum of its proper divisors (207275537296).

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

156405221360 is a wasteful number, since it uses less digits than its factorization.

156405221360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207641 (or 207635 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 35.

The spelling of 156405221360 in words is "one hundred fifty-six billion, four hundred five million, two hundred twenty-one thousand, three hundred sixty".