51436866608426 has 32 divisors (see below), whose sum is σ = 84050386257600. Its totient is φ = 23466759486336.

The previous prime is 51436866608423. The next prime is 51436866608507. The reversal of 51436866608426 is 62480666863415.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (51436866608423) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18957476 + ... + 21500223.

It is an arithmetic number, because the mean of its divisors is an integer number (2626574570550).

Almost surely, 2^{51436866608426} is an apocalyptic number.

51436866608426 is a deficient number, since it is larger than the sum of its proper divisors (32613519649174).

51436866608426 is a wasteful number, since it uses less digits than its factorization.

51436866608426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40458278.

The product of its (nonzero) digits is 238878720, while the sum is 65.

The spelling of 51436866608426 in words is "fifty-one trillion, four hundred thirty-six billion, eight hundred sixty-six million, six hundred eight thousand, four hundred twenty-six".