51613636006 has 4 divisors (see below), whose sum is σ = 77420454012. Its totient is φ = 25806818002.

The previous prime is 51613636003. The next prime is 51613636007. The reversal of 51613636006 is 60063631615.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51613636003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12903409000 + ... + 12903409003.

It is an arithmetic number, because the mean of its divisors is an integer number (19355113503).

Almost surely, 2^51613636006 is an apocalyptic number.

51613636006 is a deficient number, since it is larger than the sum of its proper divisors (25806818006).

51613636006 is a wasteful number, since it uses less digits than its factorization.

51613636006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25806818005.

The product of its (nonzero) digits is 58320, while the sum is 37.

The spelling of 51613636006 in words is "fifty-one billion, six hundred thirteen million, six hundred thirty-six thousand, six".