51661650150057 has 8 divisors (see below), whose sum is σ = 68882249374720. Its totient is φ = 34441075512720.

The previous prime is 51661650149959. The next prime is 51661650150073. The reversal of 51661650150057 is 75005105616615.

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

It is not a de Polignac number, because 51661650150057 - 2¹⁹ = 51661649625769 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51661650149988 and 51661650150015.

It is not an unprimeable number, because it can be changed into a prime (51661650150157) 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, 504169 + ... + 10177302.

It is an arithmetic number, because the mean of its divisors is an integer number (8610281171840).

Almost surely, 2^{51661650150057} is an apocalyptic number.

It is an amenable number.

51661650150057 is a deficient number, since it is larger than the sum of its proper divisors (17220599224663).

51661650150057 is a wasteful number, since it uses less digits than its factorization.

51661650150057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12293663.

The product of its (nonzero) digits is 945000, while the sum is 48.

The spelling of 51661650150057 in words is "fifty-one trillion, six hundred sixty-one billion, six hundred fifty million, one hundred fifty thousand, fifty-seven".