63517172061 has 16 divisors (see below), whose sum is σ = 96805785600. Its totient is φ = 36288884208.

The previous prime is 63517172003. The next prime is 63517172113. The reversal of 63517172061 is 16027171536.

It is not a de Polignac number, because 63517172061 - 2¹⁷ = 63517040989 is a prime.

It is a super-2 number, since 2×63517172061² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63517172261) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 158121 + ... + 389918.

It is an arithmetic number, because the mean of its divisors is an integer number (6050361600).

Almost surely, 2^63517172061 is an apocalyptic number.

It is an amenable number.

63517172061 is a deficient number, since it is larger than the sum of its proper divisors (33288613539).

63517172061 is a wasteful number, since it uses less digits than its factorization.

63517172061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 553568.

The product of its (nonzero) digits is 52920, while the sum is 39.

The spelling of 63517172061 in words is "sixty-three billion, five hundred seventeen million, one hundred seventy-two thousand, sixty-one".