12400834515 has 8 divisors (see below), whose sum is σ = 19841335248. Its totient is φ = 6613778400.

The previous prime is 12400834513. The next prime is 12400834517. The reversal of 12400834515 is 51543800421.

It is an interprime number because it is at equal distance from previous prime (12400834513) and next prime (12400834517).

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

It is not a de Polignac number, because 12400834515 - 2¹ = 12400834513 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12400834513) 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, 413361136 + ... + 413361165.

It is an arithmetic number, because the mean of its divisors is an integer number (2480166906).

Almost surely, 2^12400834515 is an apocalyptic number.

12400834515 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12400834515 is a deficient number, since it is larger than the sum of its proper divisors (7440500733).

12400834515 is an equidigital number, since it uses as much as digits as its factorization.

12400834515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 826722309.

The product of its (nonzero) digits is 19200, while the sum is 33.

The spelling of 12400834515 in words is "twelve billion, four hundred million, eight hundred thirty-four thousand, five hundred fifteen".