51200611111 has 4 divisors (see below), whose sum is σ = 55139119672. Its totient is φ = 47262102552.

The previous prime is 51200611087. The next prime is 51200611123. The reversal of 51200611111 is 11111600215.

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

It is a cyclic number.

It is not a de Polignac number, because 51200611111 - 2¹³ = 51200602919 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51200311111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1969254261 + ... + 1969254286.

It is an arithmetic number, because the mean of its divisors is an integer number (13784779918).

Almost surely, 2^51200611111 is an apocalyptic number.

51200611111 is a deficient number, since it is larger than the sum of its proper divisors (3938508561).

51200611111 is a wasteful number, since it uses less digits than its factorization.

51200611111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3938508560.

The product of its (nonzero) digits is 60, while the sum is 19.

The spelling of 51200611111 in words is "fifty-one billion, two hundred million, six hundred eleven thousand, one hundred eleven".