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12457913458 = 26228956729
BaseRepresentation
bin10111001101000110…
…01010110001110010
31012011012202120112011
423212203022301302
5201003211212313
65420104153134
7620501342254
oct134643126162
935135676464
1012457913458
115313192851
1224b81687aa
131236ca2433
14862779cd4
154cda7393d
hex2e68cac72

12457913458 has 4 divisors (see below), whose sum is σ = 18686870190. Its totient is φ = 6228956728.

The previous prime is 12457913443. The next prime is 12457913491. The reversal of 12457913458 is 85431975421.

It is a happy number.

12457913458 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 12264898009 + 193015449 = 110747^2 + 13893^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3114478363 + ... + 3114478366.

Almost surely, 212457913458 is an apocalyptic number.

12457913458 is a deficient number, since it is larger than the sum of its proper divisors (6228956732).

12457913458 is an equidigital number, since it uses as much as digits as its factorization.

12457913458 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6228956731.

The product of its digits is 1209600, while the sum is 49.

The spelling of 12457913458 in words is "twelve billion, four hundred fifty-seven million, nine hundred thirteen thousand, four hundred fifty-eight".

Divisors: 1 2 6228956729 12457913458