51661755962 has 8 divisors (see below), whose sum is σ = 78473553600. Its totient is φ = 25503904764.

The previous prime is 51661755947. The next prime is 51661755983. The reversal of 51661755962 is 26955716615.

It is a happy number.

51661755962 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

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, 163486412 + ... + 163486727.

It is an arithmetic number, because the mean of its divisors is an integer number (9809194200).

Almost surely, 2^51661755962 is an apocalyptic number.

51661755962 is a deficient number, since it is larger than the sum of its proper divisors (26811797638).

51661755962 is a wasteful number, since it uses less digits than its factorization.

51661755962 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326973220.

The product of its digits is 3402000, while the sum is 53.

The spelling of 51661755962 in words is "fifty-one billion, six hundred sixty-one million, seven hundred fifty-five thousand, nine hundred sixty-two".