15361173422661 has 32 divisors (see below), whose sum is σ = 23577005260800. Its totient is φ = 8798248010880.

The previous prime is 15361173422653. The next prime is 15361173422671. The reversal of 15361173422661 is 16622437116351.

It is not a de Polignac number, because 15361173422661 - 2³ = 15361173422653 is a prime.

It is a super-4 number, since 4×15361173422661⁴ (a number of 54 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 15361173422661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15361173422611) 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, 29694021 + ... + 30206906.

It is an arithmetic number, because the mean of its divisors is an integer number (736781414400).

Almost surely, 2^{15361173422661} is an apocalyptic number.

15361173422661 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

15361173422661 is a deficient number, since it is larger than the sum of its proper divisors (8215831838139).

15361173422661 is a wasteful number, since it uses less digits than its factorization.

15361173422661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59901369.

The product of its digits is 1088640, while the sum is 48.

The spelling of 15361173422661 in words is "fifteen trillion, three hundred sixty-one billion, one hundred seventy-three million, four hundred twenty-two thousand, six hundred sixty-one".