51542151351 has 16 divisors (see below), whose sum is σ = 68873170944. Its totient is φ = 34286357664.

The previous prime is 51542151341. The next prime is 51542151359. The reversal of 51542151351 is 15315124515.

It is a happy number.

It is not a de Polignac number, because 51542151351 - 2¹⁰ = 51542150327 is a prime.

It is a super-2 number, since 2×51542151351² (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 (51542151359) 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, 3125610 + ... + 3142056.

It is an arithmetic number, because the mean of its divisors is an integer number (4304573184).

Almost surely, 2^51542151351 is an apocalyptic number.

51542151351 is a deficient number, since it is larger than the sum of its proper divisors (17331019593).

51542151351 is a wasteful number, since it uses less digits than its factorization.

51542151351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18670.

The product of its digits is 15000, while the sum is 33.

Adding to 51542151351 its reverse (15315124515), we get a palindrome (66857275866).

The spelling of 51542151351 in words is "fifty-one billion, five hundred forty-two million, one hundred fifty-one thousand, three hundred fifty-one".