54129198450 has 24 divisors (see below), whose sum is σ = 134240412528. Its totient is φ = 14434452880.

The previous prime is 54129198397. The next prime is 54129198469. The reversal of 54129198450 is 5489192145.

It is a self number, because there is not a number n which added to its sum of digits gives 54129198450.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 180430512 + ... + 180430811.

It is an arithmetic number, because the mean of its divisors is an integer number (5593350522).

Almost surely, 2^54129198450 is an apocalyptic number.

54129198450 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

54129198450 is an abundant number, since it is smaller than the sum of its proper divisors (80111214078).

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

54129198450 is a wasteful number, since it uses less digits than its factorization.

54129198450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 360861338 (or 360861333 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 48.

The spelling of 54129198450 in words is "fifty-four billion, one hundred twenty-nine million, one hundred ninety-eight thousand, four hundred fifty".