51005009652 has 72 divisors (see below), whose sum is σ = 123666631200. Its totient is φ = 16360649280.

The previous prime is 51005009647. The next prime is 51005009663. The reversal of 51005009652 is 25690050015.

51005009652 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×51005009652² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2051874 + ... + 2076582.

It is an arithmetic number, because the mean of its divisors is an integer number (1717592100).

Almost surely, 2^51005009652 is an apocalyptic number.

It is an amenable number.

51005009652 is an abundant number, since it is smaller than the sum of its proper divisors (72661621548).

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

51005009652 is a wasteful number, since it uses less digits than its factorization.

51005009652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24957 (or 24924 counting only the distinct ones).

The product of its (nonzero) digits is 13500, while the sum is 33.

Adding to 51005009652 its reverse (25690050015), we get a palindrome (76695059667).

The spelling of 51005009652 in words is "fifty-one billion, five million, nine thousand, six hundred fifty-two".