1269623587680 has 480 divisors, whose sum is σ = 5131180099584. Its totient is φ = 289612329984.

The previous prime is 1269623587679. The next prime is 1269623587751. The reversal of 1269623587680 is 867853269621.

It is a happy number.

1269623587680 is a `hidden beast` number, since 1 + 26 + 9 + 6 + 23 + 587 + 6 + 8 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (480).

It is a super-2 number, since 2×1269623587680² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 45618249 + ... + 45646071.

Almost surely, 2^{1269623587680} is an apocalyptic number.

1269623587680 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 1269623587680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2565590049792).

1269623587680 is an abundant number, since it is smaller than the sum of its proper divisors (3861556511904).

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

1269623587680 is a wasteful number, since it uses less digits than its factorization.

1269623587680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28360 (or 28343 counting only the distinct ones).

The product of its (nonzero) digits is 52254720, while the sum is 63.

The spelling of 1269623587680 in words is "one trillion, two hundred sixty-nine billion, six hundred twenty-three million, five hundred eighty-seven thousand, six hundred eighty".