51436556136107 has 4 divisors (see below), whose sum is σ = 51908451146640. Its totient is φ = 50964661125576.

The previous prime is 51436556136061. The next prime is 51436556136113. The reversal of 51436556136107 is 70163165563415.

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 51436556136107 - 2¹² = 51436556132011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51436556136607) 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, 235947505103 + ... + 235947505320.

It is an arithmetic number, because the mean of its divisors is an integer number (12977112786660).

Almost surely, 2^{51436556136107} is an apocalyptic number.

51436556136107 is a deficient number, since it is larger than the sum of its proper divisors (471895010533).

51436556136107 is a wasteful number, since it uses less digits than its factorization.

51436556136107 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 471895010532.

The product of its (nonzero) digits is 6804000, while the sum is 53.

The spelling of 51436556136107 in words is "fifty-one trillion, four hundred thirty-six billion, five hundred fifty-six million, one hundred thirty-six thousand, one hundred seven".