51126603563 has 32 divisors (see below), whose sum is σ = 59706716160. Its totient is φ = 42877486080.

The previous prime is 51126603559. The next prime is 51126603613. The reversal of 51126603563 is 36530662115.

It is a cyclic number.

It is not a de Polignac number, because 51126603563 - 2² = 51126603559 is a prime.

It is a super-2 number, since 2×51126603563² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51126603163) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 35332106 + ... + 35333552.

It is an arithmetic number, because the mean of its divisors is an integer number (1865834880).

Almost surely, 2^51126603563 is an apocalyptic number.

51126603563 is a deficient number, since it is larger than the sum of its proper divisors (8580112597).

51126603563 is a wasteful number, since it uses less digits than its factorization.

51126603563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2067.

The product of its (nonzero) digits is 97200, while the sum is 38.

The spelling of 51126603563 in words is "fifty-one billion, one hundred twenty-six million, six hundred three thousand, five hundred sixty-three".