1226977825788 has 576 divisors, whose sum is σ = 3773234949120. Its totient is φ = 331314278400.

The previous prime is 1226977825741. The next prime is 1226977825823. The reversal of 1226977825788 is 8875287796221.

1226977825788 is a `hidden beast` number, since 1 + 226 + 9 + 7 + 78 + 257 + 88 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 5357981658 + ... + 5357981886.

It is an arithmetic number, because the mean of its divisors is an integer number (6550755120).

Almost surely, 2^{1226977825788} is an apocalyptic number.

1226977825788 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1226977825788, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1886617474560).

1226977825788 is an abundant number, since it is smaller than the sum of its proper divisors (2546257123332).

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

1226977825788 is a wasteful number, since it uses less digits than its factorization.

1226977825788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 578 (or 573 counting only the distinct ones).

The product of its digits is 379330560, while the sum is 72.

The spelling of 1226977825788 in words is "one trillion, two hundred twenty-six billion, nine hundred seventy-seven million, eight hundred twenty-five thousand, seven hundred eighty-eight".