63510402340 has 144 divisors (see below), whose sum is σ = 179207562240. Its totient is φ = 18630958080.

The previous prime is 63510402337. The next prime is 63510402349. The reversal of 63510402340 is 4320401536.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 63510402299 and 63510402308.

It is not an unprimeable number, because it can be changed into a prime (63510402349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 9981 + ... + 356539.

It is an arithmetic number, because the mean of its divisors is an integer number (1244496960).

Almost surely, 2^63510402340 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 63510402340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89603781120).

63510402340 is an abundant number, since it is smaller than the sum of its proper divisors (115697159900).

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

63510402340 is a wasteful number, since it uses less digits than its factorization.

63510402340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 346610 (or 346601 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 28.

Adding to 63510402340 its reverse (4320401536), we get a palindrome (67830803876).

The spelling of 63510402340 in words is "sixty-three billion, five hundred ten million, four hundred two thousand, three hundred forty".