63554673620 has 48 divisors (see below), whose sum is σ = 134967763728. Its totient is φ = 25136670720.

The previous prime is 63554673619. The next prime is 63554673629. The reversal of 63554673620 is 2637645536.

It can be written as a sum of positive squares in 8 ways, for example, as 39471358276 + 24083315344 = 198674^2 + 155188^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63554673629) 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, 918062 + ... + 984858.

It is an arithmetic number, because the mean of its divisors is an integer number (2811828411).

Almost surely, 2^63554673620 is an apocalyptic number.

It is an amenable number.

63554673620 is an abundant number, since it is smaller than the sum of its proper divisors (71413090108).

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

63554673620 is a wasteful number, since it uses less digits than its factorization.

63554673620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67340 (or 67338 counting only the distinct ones).

The product of its (nonzero) digits is 2721600, while the sum is 47.

The spelling of 63554673620 in words is "sixty-three billion, five hundred fifty-four million, six hundred seventy-three thousand, six hundred twenty".