12901215458 has 8 divisors (see below), whose sum is σ = 19353423852. Its totient is φ = 6450074176.

The previous prime is 12901215451. The next prime is 12901215461. The reversal of 12901215458 is 85451210921.

It can be written as a sum of positive squares in 2 ways, for example, as 12897463489 + 3751969 = 113567^2 + 1937^2 .

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12901215451) 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, 235835 + ... + 285342.

Almost surely, 2^12901215458 is an apocalyptic number.

12901215458 is a deficient number, since it is larger than the sum of its proper divisors (6452208394).

12901215458 is a wasteful number, since it uses less digits than its factorization.

12901215458 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 533556.

The product of its (nonzero) digits is 28800, while the sum is 38.

The spelling of 12901215458 in words is "twelve billion, nine hundred one million, two hundred fifteen thousand, four hundred fifty-eight".