15266878461822 has 64 divisors (see below), whose sum is σ = 33786294474240. Its totient is φ = 4568501948544.

The previous prime is 15266878461787. The next prime is 15266878461823. The reversal of 15266878461822 is 22816487866251.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15266878461823) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5294079 + ... + 7652517.

It is an arithmetic number, because the mean of its divisors is an integer number (527910851160).

Almost surely, 2^{15266878461822} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15266878461822, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16893147237120).

15266878461822 is an abundant number, since it is smaller than the sum of its proper divisors (18519416012418).

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

15266878461822 is a wasteful number, since it uses less digits than its factorization.

15266878461822 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2360737.

The product of its digits is 123863040, while the sum is 66.

The spelling of 15266878461822 in words is "fifteen trillion, two hundred sixty-six billion, eight hundred seventy-eight million, four hundred sixty-one thousand, eight hundred twenty-two".