51642272104 has 64 divisors (see below), whose sum is σ = 103111626240. Its totient is φ = 24163584000.

The previous prime is 51642272089. The next prime is 51642272107. The reversal of 51642272104 is 40127224615.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a self number, because there is not a number n which added to its sum of digits gives 51642272104.

It is not an unprimeable number, because it can be changed into a prime (51642272107) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29458492 + ... + 29460244.

It is an arithmetic number, because the mean of its divisors is an integer number (1611119160).

Almost surely, 2^51642272104 is an apocalyptic number.

It is an amenable number.

51642272104 is a deficient number, since it is larger than the sum of its proper divisors (51469354136).

51642272104 is a wasteful number, since it uses less digits than its factorization.

51642272104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2890 (or 2886 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 34.

Adding to 51642272104 its reverse (40127224615), we get a palindrome (91769496719).

The spelling of 51642272104 in words is "fifty-one billion, six hundred forty-two million, two hundred seventy-two thousand, one hundred four".