45470444644 has 9 divisors (see below), whose sum is σ = 79574024467. Its totient is φ = 22735009084.

The previous prime is 45470444627. The next prime is 45470444693. The reversal of 45470444644 is 44644407454.

The square root of 45470444644 is 213238.

It is a perfect power (a square), and thus also a powerful number.

It is a super-2 number, since 2×45470444644² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 45470444594 and 45470444603.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 373167 + ... + 479785.

Almost surely, 2^45470444644 is an apocalyptic number.

45470444644 is the 213238-th square number.

It is an amenable number.

45470444644 is a deficient number, since it is larger than the sum of its proper divisors (34103579823).

45470444644 is an frugal number, since it uses more digits than its factorization.

45470444644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213242 (or 106621 counting only the distinct ones).

The product of its (nonzero) digits is 3440640, while the sum is 46.

The spelling of 45470444644 in words is "forty-five billion, four hundred seventy million, four hundred forty-four thousand, six hundred forty-four".