13552763440 has 40 divisors (see below), whose sum is σ = 31515045408. Its totient is φ = 5420267520.

The previous prime is 13552763437. The next prime is 13552763447. The reversal of 13552763440 is 4436725531.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 13552763393 and 13552763402.

It is not an unprimeable number, because it can be changed into a prime (13552763447) 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, 927229 + ... + 941731.

Almost surely, 2^13552763440 is an apocalyptic number.

13552763440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13552763440 is an abundant number, since it is smaller than the sum of its proper divisors (17962281968).

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

13552763440 is a wasteful number, since it uses less digits than its factorization.

13552763440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26197 (or 26191 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 40.

The spelling of 13552763440 in words is "thirteen billion, five hundred fifty-two million, seven hundred sixty-three thousand, four hundred forty".