51545025142 has 8 divisors (see below), whose sum is σ = 83265040656. Its totient is φ = 23790011592.

The previous prime is 51545025139. The next prime is 51545025163. The reversal of 51545025142 is 24152054515.

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

It is a junction number, because it is equal to n+sod(n) for n = 51545025098 and 51545025107.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 991250458 + ... + 991250509.

It is an arithmetic number, because the mean of its divisors is an integer number (10408130082).

Almost surely, 2^51545025142 is an apocalyptic number.

51545025142 is a deficient number, since it is larger than the sum of its proper divisors (31720015514).

51545025142 is a wasteful number, since it uses less digits than its factorization.

51545025142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1982500982.

The product of its (nonzero) digits is 40000, while the sum is 34.

Adding to 51545025142 its reverse (24152054515), we get a palindrome (75697079657).

The spelling of 51545025142 in words is "fifty-one billion, five hundred forty-five million, twenty-five thousand, one hundred forty-two".