51432540199 has 8 divisors (see below), whose sum is σ = 52231339872. Its totient is φ = 50639769600.

The previous prime is 51432540139. The next prime is 51432540239. The reversal of 51432540199 is 99104523415.

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

It is a cyclic number.

It is not a de Polignac number, because 51432540199 - 2¹³ = 51432532007 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51432540109) 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, 1490074 + ... + 1524199.

It is an arithmetic number, because the mean of its divisors is an integer number (6528917484).

Almost surely, 2^51432540199 is an apocalyptic number.

51432540199 is a deficient number, since it is larger than the sum of its proper divisors (798799673).

51432540199 is a wasteful number, since it uses less digits than its factorization.

51432540199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3014537.

The product of its (nonzero) digits is 194400, while the sum is 43.

The spelling of 51432540199 in words is "fifty-one billion, four hundred thirty-two million, five hundred forty thousand, one hundred ninety-nine".