51667166501 has 8 divisors (see below), whose sum is σ = 51983316000. Its totient is φ = 51351794128.

The previous prime is 51667166491. The next prime is 51667166531. The reversal of 51667166501 is 10566176615.

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

It is a cyclic number.

It is not a de Polignac number, because 51667166501 - 2¹⁸ = 51666904357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51667166531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60626 + ... + 327123.

It is an arithmetic number, because the mean of its divisors is an integer number (6497914500).

Almost surely, 2^51667166501 is an apocalyptic number.

It is an amenable number.

51667166501 is a deficient number, since it is larger than the sum of its proper divisors (316149499).

51667166501 is a wasteful number, since it uses less digits than its factorization.

51667166501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 388563.

The product of its (nonzero) digits is 226800, while the sum is 44.

The spelling of 51667166501 in words is "fifty-one billion, six hundred sixty-seven million, one hundred sixty-six thousand, five hundred one".