40295744644 has 27 divisors (see below), whose sum is σ = 73054150351. Its totient is φ = 19447497440.

The previous prime is 40295744639. The next prime is 40295744653. The reversal of 40295744644 is 44644759204.

The square root of 40295744644 is 200738.

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

It can be written as a sum of positive squares in 4 ways, for example, as 3523847044 + 36771897600 = 59362^2 + 191760^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 11641074 + ... + 11644534.

Almost surely, 2^40295744644 is an apocalyptic number.

40295744644 is the 200738-th square number.

It is an amenable number.

40295744644 is a deficient number, since it is larger than the sum of its proper divisors (32758405707).

40295744644 is an frugal number, since it uses more digits than its factorization.

40295744644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6984 (or 3492 counting only the distinct ones).

The product of its (nonzero) digits is 3870720, while the sum is 49.

Multiplying 40295744644 by its sum of digits (49), we get a square (1974491487556 = 1405166²).

The spelling of 40295744644 in words is "forty billion, two hundred ninety-five million, seven hundred forty-four thousand, six hundred forty-four".