51798127582 has 4 divisors (see below), whose sum is σ = 77697191376. Its totient is φ = 25899063790.

The previous prime is 51798127573. The next prime is 51798127583. The reversal of 51798127582 is 28572189715.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 28572189715 = 5 ⋅5714437943.

It is a super-2 number, since 2×51798127582² (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 (51798127583) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12949531894 + ... + 12949531897.

It is an arithmetic number, because the mean of its divisors is an integer number (19424297844).

Almost surely, 2^51798127582 is an apocalyptic number.

51798127582 is a deficient number, since it is larger than the sum of its proper divisors (25899063794).

51798127582 is a wasteful number, since it uses less digits than its factorization.

51798127582 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25899063793.

The product of its digits is 2822400, while the sum is 55.

The spelling of 51798127582 in words is "fifty-one billion, seven hundred ninety-eight million, one hundred twenty-seven thousand, five hundred eighty-two".