51399208802 has 16 divisors (see below), whose sum is σ = 77409870912. Its totient is φ = 25595964240.

The previous prime is 51399208801. The next prime is 51399208837. The reversal of 51399208802 is 20880299315.

It is not an unprimeable number, because it can be changed into a prime (51399208801) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3053453 + ... + 3070239.

It is an arithmetic number, because the mean of its divisors is an integer number (4838116932).

Almost surely, 2^51399208802 is an apocalyptic number.

51399208802 is a deficient number, since it is larger than the sum of its proper divisors (26010662110).

51399208802 is a wasteful number, since it uses less digits than its factorization.

51399208802 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22873.

The product of its (nonzero) digits is 311040, while the sum is 47.

The spelling of 51399208802 in words is "fifty-one billion, three hundred ninety-nine million, two hundred eight thousand, eight hundred two".