63695407820 has 96 divisors (see below), whose sum is σ = 148316023296. Its totient is φ = 22783219200.

The previous prime is 63695407819. The next prime is 63695407823. The reversal of 63695407820 is 2870459636.

It is a happy number.

63695407820 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×63695407820² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (63695407823) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7133879 + ... + 7142801.

It is an arithmetic number, because the mean of its divisors is an integer number (1544958576).

Almost surely, 2^63695407820 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 63695407820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74158011648).

63695407820 is an abundant number, since it is smaller than the sum of its proper divisors (84620615476).

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

63695407820 is a wasteful number, since it uses less digits than its factorization.

63695407820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9471 (or 9469 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 50.

The spelling of 63695407820 in words is "sixty-three billion, six hundred ninety-five million, four hundred seven thousand, eight hundred twenty".