51505226205436 has 6 divisors (see below), whose sum is σ = 90134145859520. Its totient is φ = 25752613102716.

The previous prime is 51505226205397. The next prime is 51505226205437. The reversal of 51505226205436 is 63450262250515.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51505226205437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6438153275676 + ... + 6438153275683.

Almost surely, 2^{51505226205436} is an apocalyptic number.

It is an amenable number.

51505226205436 is a deficient number, since it is larger than the sum of its proper divisors (38628919654084).

51505226205436 is a wasteful number, since it uses less digits than its factorization.

51505226205436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12876306551363 (or 12876306551361 counting only the distinct ones).

The product of its (nonzero) digits is 2160000, while the sum is 46.

The spelling of 51505226205436 in words is "fifty-one trillion, five hundred five billion, two hundred twenty-six million, two hundred five thousand, four hundred thirty-six".