13531212054 has 32 divisors (see below), whose sum is σ = 30129200640. Its totient is φ = 4501427976.

The previous prime is 13531212047. The next prime is 13531212077. The reversal of 13531212054 is 45021213531.

13531212054 is a `hidden beast` number, since 1 + 3 + 531 + 2 + 120 + 5 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 221922 + ... + 276245.

It is an arithmetic number, because the mean of its divisors is an integer number (941537520).

Almost surely, 2^13531212054 is an apocalyptic number.

13531212054 is an abundant number, since it is smaller than the sum of its proper divisors (16597988586).

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

13531212054 is a wasteful number, since it uses less digits than its factorization.

13531212054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 498681 (or 498675 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

Adding to 13531212054 its reverse (45021213531), we get a palindrome (58552425585).

The spelling of 13531212054 in words is "thirteen billion, five hundred thirty-one million, two hundred twelve thousand, fifty-four".