13781040032 has 12 divisors (see below), whose sum is σ = 27131422626. Its totient is φ = 6890520000.

The previous prime is 13781039977. The next prime is 13781040037. The reversal of 13781040032 is 23004018731.

It can be written as a sum of positive squares in only one way, i.e., 11533900816 + 2247139216 = 107396^2 + 47404^2 .

It is a super-2 number, since 2×13781040032² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13781039977 and 13781040004.

It is not an unprimeable number, because it can be changed into a prime (13781040037) 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 as a sum of consecutive naturals, namely, 215328719 + ... + 215328782.

Almost surely, 2^13781040032 is an apocalyptic number.

It is an amenable number.

13781040032 is a deficient number, since it is larger than the sum of its proper divisors (13350382594).

13781040032 is an equidigital number, since it uses as much as digits as its factorization.

13781040032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 430657511 (or 430657503 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 29.

Adding to 13781040032 its reverse (23004018731), we get a palindrome (36785058763).

The spelling of 13781040032 in words is "thirteen billion, seven hundred eighty-one million, forty thousand, thirty-two".