51915061982 has 8 divisors (see below), whose sum is σ = 88997249136. Its totient is φ = 22249312272.

The previous prime is 51915061949. The next prime is 51915061987. The reversal of 51915061982 is 28916051915.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51915061987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1854109343 + ... + 1854109370.

It is an arithmetic number, because the mean of its divisors is an integer number (11124656142).

Almost surely, 2^51915061982 is an apocalyptic number.

51915061982 is a deficient number, since it is larger than the sum of its proper divisors (37082187154).

51915061982 is a wasteful number, since it uses less digits than its factorization.

51915061982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3708218722.

The product of its (nonzero) digits is 194400, while the sum is 47.

The spelling of 51915061982 in words is "fifty-one billion, nine hundred fifteen million, sixty-one thousand, nine hundred eighty-two".