1279423353600 has 648 divisors, whose sum is σ = 5290810866432. Its totient is φ = 288908697600.

The previous prime is 1279423353581. The next prime is 1279423353623. The reversal of 1279423353600 is 63533249721.

1279423353600 is a `hidden beast` number, since 1 + 2 + 7 + 9 + 4 + 2 + 3 + 35 + 3 + 600 = 666.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 33446485 + ... + 33484715.

It is an arithmetic number, because the mean of its divisors is an integer number (8164831584).

Almost surely, 2^{1279423353600} is an apocalyptic number.

1279423353600 is a gapful number since it is divisible by the number (10) 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 1279423353600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2645405433216).

1279423353600 is an abundant number, since it is smaller than the sum of its proper divisors (4011387512832).

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

1279423353600 is a wasteful number, since it uses less digits than its factorization.

1279423353600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38353 (or 38331 counting only the distinct ones).

The product of its (nonzero) digits is 816480, while the sum is 45.

The spelling of 1279423353600 in words is "one trillion, two hundred seventy-nine billion, four hundred twenty-three million, three hundred fifty-three thousand, six hundred".