51023113653 has 8 divisors (see below), whose sum is σ = 68031861568. Its totient is φ = 34014887424.

The previous prime is 51023113651. The next prime is 51023113717. The reversal of 51023113653 is 35631132015.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 51023113653 - 2¹ = 51023113651 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51023113653.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51023113651) 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, 321525 + ... + 453237.

It is an arithmetic number, because the mean of its divisors is an integer number (8503982696).

Almost surely, 2^51023113653 is an apocalyptic number.

It is an amenable number.

51023113653 is a deficient number, since it is larger than the sum of its proper divisors (17008747915).

51023113653 is a wasteful number, since it uses less digits than its factorization.

51023113653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260843.

The product of its (nonzero) digits is 8100, while the sum is 30.

Adding to 51023113653 its reverse (35631132015), we get a palindrome (86654245668).

The spelling of 51023113653 in words is "fifty-one billion, twenty-three million, one hundred thirteen thousand, six hundred fifty-three".