15551120422343 has 24 divisors (see below), whose sum is σ = 17291642875584. Its totient is φ = 13974087536640.

The previous prime is 15551120422309. The next prime is 15551120422349. The reversal of 15551120422343 is 34322402115551.

It is not a de Polignac number, because 15551120422343 - 2²⁶ = 15551053313479 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 15551120422297 and 15551120422306.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15551120422349) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3468455 + ... + 6567527.

It is an arithmetic number, because the mean of its divisors is an integer number (720485119816).

Almost surely, 2^{15551120422343} is an apocalyptic number.

15551120422343 is a deficient number, since it is larger than the sum of its proper divisors (1740522453241).

15551120422343 is a wasteful number, since it uses less digits than its factorization.

15551120422343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3099575 (or 3099564 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 38.

Adding to 15551120422343 its reverse (34322402115551), we get a palindrome (49873522537894).

The spelling of 15551120422343 in words is "fifteen trillion, five hundred fifty-one billion, one hundred twenty million, four hundred twenty-two thousand, three hundred forty-three".