45220523402 has 4 divisors (see below), whose sum is σ = 67830785106. Its totient is φ = 22610261700.

The previous prime is 45220523401. The next prime is 45220523417. The reversal of 45220523402 is 20432502254.

45220523402 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, and also an emirpimes, since its reverse is a distinct semiprime: 20432502254 = 2 ⋅10216251127.

It can be written as a sum of positive squares in only one way, i.e., 39807831361 + 5412692041 = 199519^2 + 73571^2 .

It is not an unprimeable number, because it can be changed into a prime (45220523401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11305130849 + ... + 11305130852.

Almost surely, 2^45220523402 is an apocalyptic number.

45220523402 is a deficient number, since it is larger than the sum of its proper divisors (22610261704).

45220523402 is a wasteful number, since it uses less digits than its factorization.

45220523402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22610261703.

The product of its (nonzero) digits is 19200, while the sum is 29.

The spelling of 45220523402 in words is "forty-five billion, two hundred twenty million, five hundred twenty-three thousand, four hundred two".