39777945228 has 144 divisors (see below), whose sum is σ = 116042035200. Its totient is φ = 11254142592.

The previous prime is 39777945211. The next prime is 39777945283. The reversal of 39777945228 is 82254977793.

39777945228 is a `hidden beast` number, since 3 + 97 + 7 + 79 + 452 + 28 = 666.

It is a Smith number, since the sum of its digits (63) coincides with the sum of the digits of its prime factors.

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

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, 11181226 + ... + 11184782.

Almost surely, 2^39777945228 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 39777945228, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58021017600).

39777945228 is an abundant number, since it is smaller than the sum of its proper divisors (76264089972).

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

39777945228 is a wasteful number, since it uses less digits than its factorization.

39777945228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3996 (or 3991 counting only the distinct ones).

The product of its digits is 53343360, while the sum is 63.

The spelling of 39777945228 in words is "thirty-nine billion, seven hundred seventy-seven million, nine hundred forty-five thousand, two hundred twenty-eight".