1252917782046 has 240 divisors, whose sum is σ = 3364140089376. Its totient is φ = 348273463104.

The previous prime is 1252917782023. The next prime is 1252917782147. The reversal of 1252917782046 is 6402877192521.

1252917782046 is a `hidden beast` number, since 1 + 2 + 529 + 1 + 7 + 78 + 2 + 0 + 46 = 666.

It is a super-2 number, since 2×1252917782046² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 1252917781983 and 1252917782001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 100734940 + ... + 100747376.

Almost surely, 2^{1252917782046} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1252917782046, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1682070044688).

1252917782046 is an abundant number, since it is smaller than the sum of its proper divisors (2111222307330).

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

1252917782046 is an frugal number, since it uses more digits than its factorization.

1252917782046 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12523 (or 12486 counting only the distinct ones).

The product of its (nonzero) digits is 3386880, while the sum is 54.

The spelling of 1252917782046 in words is "one trillion, two hundred fifty-two billion, nine hundred seventeen million, seven hundred eighty-two thousand, forty-six".