51482685621 has 8 divisors (see below), whose sum is σ = 68653581280. Its totient is φ = 34316790192.

The previous prime is 51482685601. The next prime is 51482685623. The reversal of 51482685621 is 12658628415.

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

It is not a de Polignac number, because 51482685621 - 2⁶ = 51482685557 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51482685623) 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, 1225966 + ... + 1267263.

It is an arithmetic number, because the mean of its divisors is an integer number (8581697660).

Almost surely, 2^51482685621 is an apocalyptic number.

It is an amenable number.

51482685621 is a deficient number, since it is larger than the sum of its proper divisors (17170895659).

51482685621 is a wasteful number, since it uses less digits than its factorization.

51482685621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2500115.

The product of its digits is 921600, while the sum is 48.

The spelling of 51482685621 in words is "fifty-one billion, four hundred eighty-two million, six hundred eighty-five thousand, six hundred twenty-one".