63402356040 has 64 divisors (see below), whose sum is σ = 191595490560. Its totient is φ = 16783879680.

The previous prime is 63402356029. The next prime is 63402356077. The reversal of 63402356040 is 4065320436.

It is a junction number, because it is equal to n+sod(n) for n = 63402355992 and 63402356010.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1911856 + ... + 1944735.

It is an arithmetic number, because the mean of its divisors is an integer number (2993679540).

Almost surely, 2^63402356040 is an apocalyptic number.

63402356040 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

63402356040 is an abundant number, since it is smaller than the sum of its proper divisors (128193134520).

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

63402356040 is a wasteful number, since it uses less digits than its factorization.

63402356040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3856742 (or 3856738 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 33.

Adding to 63402356040 its reverse (4065320436), we get a palindrome (67467676476).

The spelling of 63402356040 in words is "sixty-three billion, four hundred two million, three hundred fifty-six thousand, forty".