51955749742 has 32 divisors (see below), whose sum is σ = 84882917952. Its totient is φ = 23707413504.

The previous prime is 51955749739. The next prime is 51955749803. The reversal of 51955749742 is 24794755915.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 2504103 + ... + 2524765.

It is an arithmetic number, because the mean of its divisors is an integer number (2652591186).

Almost surely, 2^51955749742 is an apocalyptic number.

51955749742 is a deficient number, since it is larger than the sum of its proper divisors (32927168210).

51955749742 is a wasteful number, since it uses less digits than its factorization.

51955749742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21772.

The product of its digits is 15876000, while the sum is 58.

The spelling of 51955749742 in words is "fifty-one billion, nine hundred fifty-five million, seven hundred forty-nine thousand, seven hundred forty-two".