51009031088206 has 4 divisors (see below), whose sum is σ = 76513546632312. Its totient is φ = 25504515544102.

The previous prime is 51009031088167. The next prime is 51009031088233. The reversal of 51009031088206 is 60288013090015.

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, 12752257772050 + ... + 12752257772053.

It is an arithmetic number, because the mean of its divisors is an integer number (19128386658078).

Almost surely, 2^{51009031088206} is an apocalyptic number.

51009031088206 is a deficient number, since it is larger than the sum of its proper divisors (25504515544106).

51009031088206 is a wasteful number, since it uses less digits than its factorization.

51009031088206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25504515544105.

The product of its (nonzero) digits is 103680, while the sum is 43.

The spelling of 51009031088206 in words is "fifty-one trillion, nine billion, thirty-one million, eighty-eight thousand, two hundred six".