51201336026 has 4 divisors (see below), whose sum is σ = 76802004042. Its totient is φ = 25600668012.

The previous prime is 51201335953. The next prime is 51201336029. The reversal of 51201336026 is 62063310215.

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

It can be written as a sum of positive squares in only one way, i.e., 50717292025 + 484044001 = 225205^2 + 22001^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 51201336026.

It is not an unprimeable number, because it can be changed into a prime (51201336029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12800334005 + ... + 12800334008.

Almost surely, 2^51201336026 is an apocalyptic number.

51201336026 is a deficient number, since it is larger than the sum of its proper divisors (25600668016).

51201336026 is a wasteful number, since it uses less digits than its factorization.

51201336026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25600668015.

The product of its (nonzero) digits is 6480, while the sum is 29.

The spelling of 51201336026 in words is "fifty-one billion, two hundred one million, three hundred thirty-six thousand, twenty-six".