51013609534 has 4 divisors (see below), whose sum is σ = 76520414304. Its totient is φ = 25506804766.

The previous prime is 51013609531. The next prime is 51013609573. The reversal of 51013609534 is 43590631015.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 51013609493 and 51013609502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51013609531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12753402382 + ... + 12753402385.

It is an arithmetic number, because the mean of its divisors is an integer number (19130103576).

Almost surely, 2^51013609534 is an apocalyptic number.

51013609534 is a deficient number, since it is larger than the sum of its proper divisors (25506804770).

51013609534 is a wasteful number, since it uses less digits than its factorization.

51013609534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25506804769.

The product of its (nonzero) digits is 48600, while the sum is 37.

The spelling of 51013609534 in words is "fifty-one billion, thirteen million, six hundred nine thousand, five hundred thirty-four".