15855045006378 has 32 divisors (see below), whose sum is σ = 33172136770176. Its totient is φ = 5042498142528.

The previous prime is 15855045006347. The next prime is 15855045006379. The reversal of 15855045006378 is 87360054055851.

It is not an unprimeable number, because it can be changed into a prime (15855045006379) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 144645001 + ... + 144754572.

It is an arithmetic number, because the mean of its divisors is an integer number (1036629274068).

Almost surely, 2^{15855045006378} is an apocalyptic number.

15855045006378 is an abundant number, since it is smaller than the sum of its proper divisors (17317091763798).

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

15855045006378 is a wasteful number, since it uses less digits than its factorization.

15855045006378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289399998.

The product of its (nonzero) digits is 20160000, while the sum is 57.

The spelling of 15855045006378 in words is "fifteen trillion, eight hundred fifty-five billion, forty-five million, six thousand, three hundred seventy-eight".