63770228139618 has 768 divisors, whose sum is σ = 204839245578240. Its totient is φ = 13782210393600.

The previous prime is 63770228139617. The next prime is 63770228139661. The reversal of 63770228139618 is 81693182207736.

63770228139618 is a `hidden beast` number, since 6 + 3 + 7 + 7 + 0 + 2 + 2 + 8 + 1 + 3 + 9 + 618 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (63770228139617) by changing a digit.

It is a polite number, since it can be written in 383 ways as a sum of consecutive naturals, for example, 1503887205 + ... + 1503929607.

It is an arithmetic number, because the mean of its divisors is an integer number (266717767680).

Almost surely, 2^{63770228139618} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 63770228139618, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (102419622789120).

63770228139618 is an abundant number, since it is smaller than the sum of its proper divisors (141069017438622).

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

63770228139618 is a wasteful number, since it uses less digits than its factorization.

63770228139618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42675 (or 42672 counting only the distinct ones).

The product of its (nonzero) digits is 36578304, while the sum is 63.

The spelling of 63770228139618 in words is "sixty-three trillion, seven hundred seventy billion, two hundred twenty-eight million, one hundred thirty-nine thousand, six hundred eighteen".