2532198309381 has 36 divisors (see below), whose sum is σ = 3970595182788. Its totient is φ = 1554350383872.

The previous prime is 2532198309373. The next prime is 2532198309409. The reversal of 2532198309381 is 1839038912352.

2532198309381 is a `hidden beast` number, since 2 + 5 + 321 + 9 + 8 + 309 + 3 + 8 + 1 = 666.

2532198309381 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 346061592900 + 2186136716481 = 588270^2 + 1478559^2 .

It is not a de Polignac number, because 2532198309381 - 2³ = 2532198309373 is a prime.

It is a super-2 number, since 2×2532198309381² (a number of 26 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2532198309301) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1492920 + ... + 2700593.

It is an arithmetic number, because the mean of its divisors is an integer number (110294310633).

Almost surely, 2^{2532198309381} is an apocalyptic number.

It is an amenable number.

2532198309381 is a deficient number, since it is larger than the sum of its proper divisors (1438396873407).

2532198309381 is a wasteful number, since it uses less digits than its factorization.

2532198309381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4193942 (or 4193926 counting only the distinct ones).

The product of its (nonzero) digits is 2799360, while the sum is 54.

The spelling of 2532198309381 in words is "two trillion, five hundred thirty-two billion, one hundred ninety-eight million, three hundred nine thousand, three hundred eighty-one".