12452378075557 has 8 divisors (see below), whose sum is σ = 14722023340800. Its totient is φ = 10305416338224.

The previous prime is 12452378075477. The next prime is 12452378075581. The reversal of 12452378075557 is 75557087325421.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12452378075557 - 2²³ = 12452369686949 is a prime.

It is a super-2 number, since 2×12452378075557² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12452378075495 and 12452378075504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12452378075957) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30670881757 + ... + 30670882162.

It is an arithmetic number, because the mean of its divisors is an integer number (1840252917600).

Almost surely, 2^{12452378075557} is an apocalyptic number.

It is an amenable number.

12452378075557 is a deficient number, since it is larger than the sum of its proper divisors (2269645265243).

12452378075557 is an equidigital number, since it uses as much as digits as its factorization.

12452378075557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61341763955.

The product of its (nonzero) digits is 82320000, while the sum is 61.

The spelling of 12452378075557 in words is "twelve trillion, four hundred fifty-two billion, three hundred seventy-eight million, seventy-five thousand, five hundred fifty-seven".