63698577040 has 240 divisors, whose sum is σ = 183455226864. Its totient is φ = 20437401600.

The previous prime is 63698577001. The next prime is 63698577133. The reversal of 63698577040 is 4077589636.

It is a happy number.

63698577040 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 13069976976 + 50628600064 = 114324^2 + 225008^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 12059200 + ... + 12064480.

Almost surely, 2^63698577040 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 63698577040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91727613432).

63698577040 is an abundant number, since it is smaller than the sum of its proper divisors (119756649824).

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

63698577040 is a wasteful number, since it uses less digits than its factorization.

63698577040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5506 (or 5493 counting only the distinct ones).

The product of its (nonzero) digits is 7620480, while the sum is 55.

It can be divided in two parts, 636985 and 77040, that added together give a square (714025 = 845²).

The spelling of 63698577040 in words is "sixty-three billion, six hundred ninety-eight million, five hundred seventy-seven thousand, forty".