51240170722 has 32 divisors (see below), whose sum is σ = 84635092080. Its totient is φ = 23120348160.

The previous prime is 51240170699. The next prime is 51240170741. The reversal of 51240170722 is 22707104215.

It can be written as a sum of positive squares in 8 ways, for example, as 20831437561 + 30408733161 = 144331^2 + 174381^2 .

It is a super-3 number, since 3×51240170722³ (a number of 33 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 321054 + ... + 453382.

Almost surely, 2^51240170722 is an apocalyptic number.

51240170722 is a deficient number, since it is larger than the sum of its proper divisors (33394921358).

51240170722 is a wasteful number, since it uses less digits than its factorization.

51240170722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132678.

The product of its (nonzero) digits is 7840, while the sum is 31.

Adding to 51240170722 its reverse (22707104215), we get a palindrome (73947274937).

The spelling of 51240170722 in words is "fifty-one billion, two hundred forty million, one hundred seventy thousand, seven hundred twenty-two".