51428888026 has 4 divisors (see below), whose sum is σ = 77143332042. Its totient is φ = 25714444012.

The previous prime is 51428888009. The next prime is 51428888029. The reversal of 51428888026 is 62088882415.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 48582772225 + 2846115801 = 220415^2 + 53349^2 .

It is not an unprimeable number, because it can be changed into a prime (51428888029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12857222005 + ... + 12857222008.

Almost surely, 2^51428888026 is an apocalyptic number.

51428888026 is a deficient number, since it is larger than the sum of its proper divisors (25714444016).

51428888026 is a wasteful number, since it uses less digits than its factorization.

51428888026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25714444015.

The product of its (nonzero) digits is 1966080, while the sum is 52.

The spelling of 51428888026 in words is "fifty-one billion, four hundred twenty-eight million, eight hundred eighty-eight thousand, twenty-six".