1229193878640 has 1440 divisors, whose sum is σ = 5042320699392. Its totient is φ = 246564864000.

The previous prime is 1229193878639. The next prime is 1229193878657. The reversal of 1229193878640 is 468783919221.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 4374355300 + ... + 4374355580.

Almost surely, 2^{1229193878640} is an apocalyptic number.

1229193878640 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 1229193878640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2521160349696).

1229193878640 is an abundant number, since it is smaller than the sum of its proper divisors (3813126820752).

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

1229193878640 is a wasteful number, since it uses less digits than its factorization.

1229193878640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 439 (or 413 counting only the distinct ones).

The product of its (nonzero) digits is 10450944, while the sum is 60.

The spelling of 1229193878640 in words is "one trillion, two hundred twenty-nine billion, one hundred ninety-three million, eight hundred seventy-eight thousand, six hundred forty".