51535571090 has 8 divisors (see below), whose sum is σ = 92764027980. Its totient is φ = 20614228432.

The previous prime is 51535571039. The next prime is 51535571099. The reversal of 51535571090 is 9017553515.

It can be written as a sum of positive squares in 2 ways, for example, as 51430529089 + 105042001 = 226783^2 + 10249^2 .

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

It is not an unprimeable number, because it can be changed into a prime (51535571099) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2576778545 + ... + 2576778564.

Almost surely, 2^51535571090 is an apocalyptic number.

51535571090 is a deficient number, since it is larger than the sum of its proper divisors (41228456890).

51535571090 is a wasteful number, since it uses less digits than its factorization.

51535571090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5153557116.

The product of its (nonzero) digits is 118125, while the sum is 41.

The spelling of 51535571090 in words is "fifty-one billion, five hundred thirty-five million, five hundred seventy-one thousand, ninety".