377617481728 has 128 divisors (see below), whose sum is σ = 783551139840. Its totient is φ = 181789655040.

The previous prime is 377617481723. The next prime is 377617481749. The reversal of 377617481728 is 827184716773.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Smith number, since the sum of its digits (61) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (377617481723) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 226524351 + ... + 226526017.

It is an arithmetic number, because the mean of its divisors is an integer number (6121493280).

Almost surely, 2^377617481728 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 377617481728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (391775569920).

377617481728 is an abundant number, since it is smaller than the sum of its proper divisors (405933658112).

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

377617481728 is an equidigital number, since it uses as much as digits as its factorization.

377617481728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1951 (or 1923 counting only the distinct ones).

The product of its digits is 22127616, while the sum is 61.

The spelling of 377617481728 in words is "three hundred seventy-seven billion, six hundred seventeen million, four hundred eighty-one thousand, seven hundred twenty-eight".