51521264606 has 16 divisors (see below), whose sum is σ = 88326155616. Its totient is φ = 22079545056.

The previous prime is 51521264513. The next prime is 51521264617. The reversal of 51521264606 is 60646212515.

It is a self number, because there is not a number n which added to its sum of digits gives 51521264606.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 298520 + ... + 438356.

It is an arithmetic number, because the mean of its divisors is an integer number (5520384726).

Almost surely, 2^51521264606 is an apocalyptic number.

51521264606 is a deficient number, since it is larger than the sum of its proper divisors (36804891010).

51521264606 is a wasteful number, since it uses less digits than its factorization.

51521264606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166163.

The product of its (nonzero) digits is 86400, while the sum is 38.

The spelling of 51521264606 in words is "fifty-one billion, five hundred twenty-one million, two hundred sixty-four thousand, six hundred six".