51564663510 has 32 divisors (see below), whose sum is σ = 123770799360. Its totient is φ = 13748842848.

The previous prime is 51564663499. The next prime is 51564663511. The reversal of 51564663510 is 1536646515.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51564663511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 143031 + ... + 351549.

It is an arithmetic number, because the mean of its divisors is an integer number (3867837480).

Almost surely, 2^51564663510 is an apocalyptic number.

51564663510 is an abundant number, since it is smaller than the sum of its proper divisors (72206135850).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51564663510 is a wasteful number, since it uses less digits than its factorization.

51564663510 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216772.

The product of its (nonzero) digits is 324000, while the sum is 42.

The spelling of 51564663510 in words is "fifty-one billion, five hundred sixty-four million, six hundred sixty-three thousand, five hundred ten".