203115135112464 has 20 divisors (see below), whose sum is σ = 524714099040656. Its totient is φ = 67705045037472.

The previous prime is 203115135112441. The next prime is 203115135112493. The reversal of 203115135112464 is 464211531511302.

203115135112464 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×203115135112464³ (a number of 44 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2115782657374 + ... + 2115782657469.

Almost surely, 2^{203115135112464} is an apocalyptic number.

203115135112464 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

203115135112464 is an abundant number, since it is smaller than the sum of its proper divisors (321598963928192).

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

203115135112464 is a wasteful number, since it uses less digits than its factorization.

203115135112464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4231565314854 (or 4231565314848 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 39.

Adding to 203115135112464 its reverse (464211531511302), we get a palindrome (667326666623766).

The spelling of 203115135112464 in words is "two hundred three trillion, one hundred fifteen billion, one hundred thirty-five million, one hundred twelve thousand, four hundred sixty-four".