13770381020 has 48 divisors (see below), whose sum is σ = 32399323488. Its totient is φ = 4872072960.

The previous prime is 13770381007. The next prime is 13770381029. The reversal of 13770381020 is 2018307731.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13770381029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 837707 + ... + 853986.

It is an arithmetic number, because the mean of its divisors is an integer number (674985906).

Almost surely, 2^13770381020 is an apocalyptic number.

13770381020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13770381020 is an abundant number, since it is smaller than the sum of its proper divisors (18628942468).

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

13770381020 is a wasteful number, since it uses less digits than its factorization.

13770381020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1691750 (or 1691748 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 32.

Adding to 13770381020 its reverse (2018307731), we get a palindrome (15788688751).

The spelling of 13770381020 in words is "thirteen billion, seven hundred seventy million, three hundred eighty-one thousand, twenty".