51543425419 has 16 divisors (see below), whose sum is σ = 52487705088. Its totient is φ = 50604662592.

The previous prime is 51543425399. The next prime is 51543425429. The reversal of 51543425419 is 91452434515.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 51543425419 - 2¹⁹ = 51542901131 is a prime.

It is a super-2 number, since 2×51543425419² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51543425429) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43204287 + ... + 43205479.

It is an arithmetic number, because the mean of its divisors is an integer number (3280481568).

Almost surely, 2^51543425419 is an apocalyptic number.

51543425419 is a deficient number, since it is larger than the sum of its proper divisors (944279669).

51543425419 is a wasteful number, since it uses less digits than its factorization.

51543425419 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2874.

The product of its digits is 432000, while the sum is 43.

The spelling of 51543425419 in words is "fifty-one billion, five hundred forty-three million, four hundred twenty-five thousand, four hundred nineteen".