51111100606 has 4 divisors (see below), whose sum is σ = 76666650912. Its totient is φ = 25555550302.

The previous prime is 51111100583. The next prime is 51111100609. The reversal of 51111100606 is 60600111115.

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

It is a super-2 number, since 2×51111100606² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51111100609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12777775150 + ... + 12777775153.

It is an arithmetic number, because the mean of its divisors is an integer number (19166662728).

Almost surely, 2^51111100606 is an apocalyptic number.

51111100606 is a deficient number, since it is larger than the sum of its proper divisors (25555550306).

51111100606 is a wasteful number, since it uses less digits than its factorization.

51111100606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25555550305.

The product of its (nonzero) digits is 180, while the sum is 22.

The spelling of 51111100606 in words is "fifty-one billion, one hundred eleven million, one hundred thousand, six hundred six".