1799525881872 has 120 divisors (see below), whose sum is σ = 5271509539296. Its totient is φ = 594235823616.

The previous prime is 1799525881841. The next prime is 1799525881877. The reversal of 1799525881872 is 2781885259971.

1799525881872 is a `hidden beast` number, since 1 + 7 + 9 + 9 + 525 + 88 + 18 + 7 + 2 = 666.

It is a super-3 number, since 3×1799525881872³ (a number of 38 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a self number, because there is not a number n which added to its sum of digits gives 1799525881872.

It is not an unprimeable number, because it can be changed into a prime (1799525881877) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1746793 + ... + 2578824.

Almost surely, 2^{1799525881872} is an apocalyptic number.

1799525881872 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1799525881872 is an abundant number, since it is smaller than the sum of its proper divisors (3471983657424).

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

1799525881872 is a wasteful number, since it uses less digits than its factorization.

1799525881872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4325747 (or 4325729 counting only the distinct ones).

The product of its digits is 203212800, while the sum is 72.

The spelling of 1799525881872 in words is "one trillion, seven hundred ninety-nine billion, five hundred twenty-five million, eight hundred eighty-one thousand, eight hundred seventy-two".