13530511550 has 48 divisors (see below), whose sum is σ = 25367126400. Its totient is φ = 5369263200.

The previous prime is 13530511549. The next prime is 13530511567. The reversal of 13530511550 is 5511503531.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4392911 + ... + 4395989.

It is an arithmetic number, because the mean of its divisors is an integer number (528481800).

Almost surely, 2^13530511550 is an apocalyptic number.

13530511550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13530511550 is a deficient number, since it is larger than the sum of its proper divisors (11836614850).

13530511550 is a wasteful number, since it uses less digits than its factorization.

13530511550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3761 (or 3756 counting only the distinct ones).

The product of its (nonzero) digits is 5625, while the sum is 29.

The spelling of 13530511550 in words is "thirteen billion, five hundred thirty million, five hundred eleven thousand, five hundred fifty".