12146481557 has 8 divisors (see below), whose sum is σ = 14612308800. Its totient is φ = 9863308224.

The previous prime is 12146481517. The next prime is 12146481559. The reversal of 12146481557 is 75518464121.

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

It is not a de Polignac number, because 12146481557 - 2¹⁸ = 12146219413 is a prime.

It is a super-2 number, since 2×12146481557² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12146481559) 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, 45663332 + ... + 45663597.

It is an arithmetic number, because the mean of its divisors is an integer number (1826538600).

Almost surely, 2^12146481557 is an apocalyptic number.

It is an amenable number.

12146481557 is a deficient number, since it is larger than the sum of its proper divisors (2465827243).

12146481557 is an equidigital number, since it uses as much as digits as its factorization.

12146481557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91326955.

The product of its digits is 268800, while the sum is 44.

The spelling of 12146481557 in words is "twelve billion, one hundred forty-six million, four hundred eighty-one thousand, five hundred fifty-seven".