207556452381 has 4 divisors (see below), whose sum is σ = 276741936512. Its totient is φ = 138370968252.

The previous prime is 207556452353. The next prime is 207556452391. The reversal of 207556452381 is 183254655702.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 207556452381 - 2⁵ = 207556452349 is a prime.

It is a super-2 number, since 2×207556452381² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 207556452381.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (207556452391) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34592742061 + ... + 34592742066.

It is an arithmetic number, because the mean of its divisors is an integer number (69185484128).

Almost surely, 2^207556452381 is an apocalyptic number.

It is an amenable number.

207556452381 is a deficient number, since it is larger than the sum of its proper divisors (69185484131).

207556452381 is an equidigital number, since it uses as much as digits as its factorization.

207556452381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69185484130.

The product of its (nonzero) digits is 2016000, while the sum is 48.

The spelling of 207556452381 in words is "two hundred seven billion, five hundred fifty-six million, four hundred fifty-two thousand, three hundred eighty-one".