51451432434 has 12 divisors (see below), whose sum is σ = 111478103646. Its totient is φ = 17150477472.

The previous prime is 51451432427. The next prime is 51451432441. The reversal of 51451432434 is 43423415415.

51451432434 is a `hidden beast` number, since 514 + 51 + 43 + 24 + 34 = 666.

It is an interprime number because it is at equal distance from previous prime (51451432427) and next prime (51451432441).

It can be written as a sum of positive squares in only one way, i.e., 30584763225 + 20866669209 = 174885^2 + 144453^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1429206439 + ... + 1429206474.

Almost surely, 2^51451432434 is an apocalyptic number.

51451432434 is an abundant number, since it is smaller than the sum of its proper divisors (60026671212).

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

51451432434 is a wasteful number, since it uses less digits than its factorization.

51451432434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2858412921 (or 2858412918 counting only the distinct ones).

The product of its digits is 115200, while the sum is 36.

Adding to 51451432434 its reverse (43423415415), we get a palindrome (94874847849).

The spelling of 51451432434 in words is "fifty-one billion, four hundred fifty-one million, four hundred thirty-two thousand, four hundred thirty-four".