13530015555 has 32 divisors (see below), whose sum is σ = 24777490944. Its totient is φ = 6175927296.

The previous prime is 13530015553. The next prime is 13530015557. The reversal of 13530015555 is 55551003531.

It is an interprime number because it is at equal distance from previous prime (13530015553) and next prime (13530015557).

It is not a de Polignac number, because 13530015555 - 2¹ = 13530015553 is a prime.

It is a super-2 number, since 2×13530015555² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13530015553) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25069 + ... + 166398.

It is an arithmetic number, because the mean of its divisors is an integer number (774296592).

Almost surely, 2^13530015555 is an apocalyptic number.

13530015555 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

13530015555 is a deficient number, since it is larger than the sum of its proper divisors (11247475389).

13530015555 is a wasteful number, since it uses less digits than its factorization.

13530015555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192155.

The product of its (nonzero) digits is 28125, while the sum is 33.

The spelling of 13530015555 in words is "thirteen billion, five hundred thirty million, fifteen thousand, five hundred fifty-five".