42448951661796 has 27 divisors (see below), whose sum is σ = 107301615515913. Its totient is φ = 14149637523360.

The previous prime is 42448951661791. The next prime is 42448951661813. The reversal of 42448951661796 is 69716615984424.

The square root of 42448951661796 is 6515286.

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

42448951661796 is a `hidden beast` number, since 4 + 2 + 4 + 4 + 8 + 9 + 516 + 6 + 17 + 96 = 666.

It can be written as a sum of positive squares in only one way, i.e., 617032244196 + 41831919417600 = 785514^2 + 6467760^2 .

It is a Smith number, since the sum of its digits (72) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (42448951661791) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 38548776 + ... + 39634656.

Almost surely, 2^{42448951661796} is an apocalyptic number.

42448951661796 is the 6515286-th square number.

It is an amenable number.

42448951661796 is an abundant number, since it is smaller than the sum of its proper divisors (64852663854117).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42448951661796 is an frugal number, since it uses more digits than its factorization.

42448951661796 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2171772 (or 1085886 counting only the distinct ones).

The product of its digits is 627056640, while the sum is 72.

The spelling of 42448951661796 in words is "forty-two trillion, four hundred forty-eight billion, nine hundred fifty-one million, six hundred sixty-one thousand, seven hundred ninety-six".