51500535542 has 8 divisors (see below), whose sum is σ = 79338662976. Its totient is φ = 25054314552.

The previous prime is 51500535517. The next prime is 51500535589. The reversal of 51500535542 is 24553500515.

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

It is a super-2 number, since 2×51500535542² (a number of 22 digits) contains 22 as substring.

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, 347976518 + ... + 347976665.

It is an arithmetic number, because the mean of its divisors is an integer number (9917332872).

Almost surely, 2^51500535542 is an apocalyptic number.

51500535542 is a deficient number, since it is larger than the sum of its proper divisors (27838127434).

51500535542 is a wasteful number, since it uses less digits than its factorization.

51500535542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 695953222.

The product of its (nonzero) digits is 75000, while the sum is 35.

The spelling of 51500535542 in words is "fifty-one billion, five hundred million, five hundred thirty-five thousand, five hundred forty-two".