1229046878256 has 80 divisors (see below), whose sum is σ = 3180491078400. Its totient is φ = 408979194624.

The previous prime is 1229046878249. The next prime is 1229046878291. The reversal of 1229046878256 is 6528786409221.

It is a hoax number, since the sum of its digits (60) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 1229046878256.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 85301805 + ... + 85316211.

It is an arithmetic number, because the mean of its divisors is an integer number (39756138480).

Almost surely, 2^{1229046878256} is an apocalyptic number.

1229046878256 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1229046878256 is an abundant number, since it is smaller than the sum of its proper divisors (1951444200144).

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

1229046878256 is a wasteful number, since it uses less digits than its factorization.

1229046878256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17346 (or 17340 counting only the distinct ones).

The product of its (nonzero) digits is 23224320, while the sum is 60.

The spelling of 1229046878256 in words is "one trillion, two hundred twenty-nine billion, forty-six million, eight hundred seventy-eight thousand, two hundred fifty-six".