63739081156 has 9 divisors (see below), whose sum is σ = 111544275661. Its totient is φ = 31869288112.

The previous prime is 63739081117. The next prime is 63739081157. The reversal of 63739081156 is 65118093736.

The square root of 63739081156 is 252466.

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

63739081156 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 27175522500 + 36563558656 = 164850^2 + 191216^2 .

It is a super-3 number, since 3×63739081156³ (a number of 33 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63739081157) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 441816 + ... + 568048.

Almost surely, 2^63739081156 is an apocalyptic number.

63739081156 is the 252466-th square number.

It is an amenable number.

63739081156 is a deficient number, since it is larger than the sum of its proper divisors (47805194505).

63739081156 is an frugal number, since it uses more digits than its factorization.

63739081156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252470 (or 126235 counting only the distinct ones).

The product of its (nonzero) digits is 816480, while the sum is 49.

Multiplying 63739081156 by its sum of digits (49), we get a square (3123214976644 = 1767262²).

The spelling of 63739081156 in words is "sixty-three billion, seven hundred thirty-nine million, eighty-one thousand, one hundred fifty-six".