51071504429 has 12 divisors (see below), whose sum is σ = 56171464188. Its totient is φ = 46399679040.

The previous prime is 51071504389. The next prime is 51071504437. The reversal of 51071504429 is 92440517015.

It can be written as a sum of positive squares in 2 ways, for example, as 40885648804 + 10185855625 = 202202^2 + 100925^2 .

It is not a de Polignac number, because 51071504429 - 2²⁰ = 51070455853 is a prime.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51071504392 and 51071504401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51071504459) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 64337 + ... + 326009.

It is an arithmetic number, because the mean of its divisors is an integer number (4680955349).

Almost surely, 2^51071504429 is an apocalyptic number.

It is an amenable number.

51071504429 is a deficient number, since it is larger than the sum of its proper divisors (5099959759).

51071504429 is a wasteful number, since it uses less digits than its factorization.

51071504429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263308 (or 263297 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 38.

The spelling of 51071504429 in words is "fifty-one billion, seventy-one million, five hundred four thousand, four hundred twenty-nine".