63434857172 has 36 divisors (see below), whose sum is σ = 115036415676. Its totient is φ = 30606293760.

The previous prime is 63434857169. The next prime is 63434857249. The reversal of 63434857172 is 27175843436.

It can be written as a sum of positive squares in 6 ways, for example, as 8151561796 + 55283295376 = 90286^2 + 235124^2 .

It is a super-2 number, since 2×63434857172² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 63434857172.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7440272 + ... + 7448792.

It is an arithmetic number, because the mean of its divisors is an integer number (3195455991).

Almost surely, 2^63434857172 is an apocalyptic number.

It is an amenable number.

63434857172 is a deficient number, since it is larger than the sum of its proper divisors (51601558504).

63434857172 is a wasteful number, since it uses less digits than its factorization.

63434857172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10796 (or 10765 counting only the distinct ones).

The product of its digits is 3386880, while the sum is 50.

The spelling of 63434857172 in words is "sixty-three billion, four hundred thirty-four million, eight hundred fifty-seven thousand, one hundred seventy-two".