65421771322 has 4 divisors (see below), whose sum is σ = 98132656986. Its totient is φ = 32710885660.

The previous prime is 65421771269. The next prime is 65421771391. The reversal of 65421771322 is 22317712456.

65421771322 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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., 51629382841 + 13792388481 = 227221^2 + 117441^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16355442829 + ... + 16355442832.

Almost surely, 2^65421771322 is an apocalyptic number.

65421771322 is a deficient number, since it is larger than the sum of its proper divisors (32710885664).

65421771322 is a wasteful number, since it uses less digits than its factorization.

65421771322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32710885663.

The product of its digits is 141120, while the sum is 40.

The spelling of 65421771322 in words is "sixty-five billion, four hundred twenty-one million, seven hundred seventy-one thousand, three hundred twenty-two".