515449190243400 has 96 divisors (see below), whose sum is σ = 1826162845448640. Its totient is φ = 117816957768960.

The previous prime is 515449190243371. The next prime is 515449190243413. The reversal of 515449190243400 is 4342091944515.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 61362994639 + ... + 61363003038.

It is an arithmetic number, because the mean of its divisors is an integer number (19022529640090).

Almost surely, 2^{515449190243400} is an apocalyptic number.

515449190243400 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

515449190243400 is an abundant number, since it is smaller than the sum of its proper divisors (1310713655205240).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

515449190243400 is a wasteful number, since it uses less digits than its factorization.

515449190243400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122725997703 (or 122725997694 counting only the distinct ones).

The product of its (nonzero) digits is 3110400, while the sum is 51.

The spelling of 515449190243400 in words is "five hundred fifteen trillion, four hundred forty-nine billion, one hundred ninety million, two hundred forty-three thousand, four hundred".