51662327620166 has 4 divisors (see below), whose sum is σ = 77493491430252. Its totient is φ = 25831163810082.

The previous prime is 51662327620133. The next prime is 51662327620259. The reversal of 51662327620166 is 66102672326615.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12915581905040 + ... + 12915581905043.

It is an arithmetic number, because the mean of its divisors is an integer number (19373372857563).

Almost surely, 2^{51662327620166} is an apocalyptic number.

51662327620166 is a deficient number, since it is larger than the sum of its proper divisors (25831163810086).

51662327620166 is a wasteful number, since it uses less digits than its factorization.

51662327620166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25831163810085.

The product of its (nonzero) digits is 6531840, while the sum is 53.

The spelling of 51662327620166 in words is "fifty-one trillion, six hundred sixty-two billion, three hundred twenty-seven million, six hundred twenty thousand, one hundred sixty-six".