15545012131 has 8 divisors (see below), whose sum is σ = 17416525104. Its totient is φ = 13749887520.

The previous prime is 15545012123. The next prime is 15545012159. The reversal of 15545012131 is 13121054551.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 15545012131 - 2³ = 15545012123 is a prime.

It is a super-2 number, since 2×15545012131² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 15545012131.

It is not an unprimeable number, because it can be changed into a prime (15545072131) 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 in 7 ways as a sum of consecutive naturals, for example, 19096660 + ... + 19097473.

It is an arithmetic number, because the mean of its divisors is an integer number (2177065638).

Almost surely, 2^15545012131 is an apocalyptic number.

15545012131 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

15545012131 is a deficient number, since it is larger than the sum of its proper divisors (1871512973).

15545012131 is a wasteful number, since it uses less digits than its factorization.

15545012131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38194181.

The product of its (nonzero) digits is 3000, while the sum is 28.

Adding to 15545012131 its reverse (13121054551), we get a palindrome (28666066682).

The spelling of 15545012131 in words is "fifteen billion, five hundred forty-five million, twelve thousand, one hundred thirty-one".