15551225340131 has 32 divisors (see below), whose sum is σ = 17083922811648. Its totient is φ = 14069664645120.

The previous prime is 15551225340113. The next prime is 15551225340181. The reversal of 15551225340131 is 13104352215551.

It is a cyclic number.

It is not a de Polignac number, because 15551225340131 - 2²⁶ = 15551158231267 is a prime.

It is a super-2 number, since 2×15551225340131² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (15551225340181) 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 31 ways as a sum of consecutive naturals, for example, 175364555 + ... + 175453211.

It is an arithmetic number, because the mean of its divisors is an integer number (533872587864).

Almost surely, 2^{15551225340131} is an apocalyptic number.

15551225340131 is a deficient number, since it is larger than the sum of its proper divisors (1532697471517).

15551225340131 is a wasteful number, since it uses less digits than its factorization.

15551225340131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90111.

The product of its (nonzero) digits is 90000, while the sum is 38.

Adding to 15551225340131 its reverse (13104352215551), we get a palindrome (28655577555682).

The spelling of 15551225340131 in words is "fifteen trillion, five hundred fifty-one billion, two hundred twenty-five million, three hundred forty thousand, one hundred thirty-one".