51440273151 has 16 divisors (see below), whose sum is σ = 68979187200. Its totient is φ = 34097986368.

The previous prime is 51440273149. The next prime is 51440273153. The reversal of 51440273151 is 15137204415.

It is an interprime number because it is at equal distance from previous prime (51440273149) and next prime (51440273153).

It is not a de Polignac number, because 51440273151 - 2¹ = 51440273149 is a prime.

It is a super-2 number, since 2×51440273151² (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 (51440273153) 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, 308410 + ... + 444968.

It is an arithmetic number, because the mean of its divisors is an integer number (4311199200).

Almost surely, 2^51440273151 is an apocalyptic number.

51440273151 is a deficient number, since it is larger than the sum of its proper divisors (17538914049).

51440273151 is a wasteful number, since it uses less digits than its factorization.

51440273151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137278.

The product of its (nonzero) digits is 16800, while the sum is 33.

Adding to 51440273151 its reverse (15137204415), we get a palindrome (66577477566).

The spelling of 51440273151 in words is "fifty-one billion, four hundred forty million, two hundred seventy-three thousand, one hundred fifty-one".