51134743221 has 8 divisors (see below), whose sum is σ = 69139934784. Its totient is φ = 33609690240.

The previous prime is 51134743211. The next prime is 51134743271. The reversal of 51134743221 is 12234743115.

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

It is not a de Polignac number, because 51134743221 - 2¹⁴ = 51134726837 is a prime.

It is a super-2 number, since 2×51134743221² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51134743211) 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, 120034396 + ... + 120034821.

It is an arithmetic number, because the mean of its divisors is an integer number (8642491848).

Almost surely, 2^51134743221 is an apocalyptic number.

It is an amenable number.

51134743221 is a deficient number, since it is larger than the sum of its proper divisors (18005191563).

51134743221 is a wasteful number, since it uses less digits than its factorization.

51134743221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240069291.

The product of its digits is 20160, while the sum is 33.

The spelling of 51134743221 in words is "fifty-one billion, one hundred thirty-four million, seven hundred forty-three thousand, two hundred twenty-one".