15540780341 has 4 divisors (see below), whose sum is σ = 15659412384. Its totient is φ = 15422148300.

The previous prime is 15540780337. The next prime is 15540780349. The reversal of 15540780341 is 14308704551.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 14308704551 = 17 ⋅841688503.

It is a cyclic number.

It is not a de Polignac number, because 15540780341 - 2² = 15540780337 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 15540780295 and 15540780304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15540780349) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 59315825 + ... + 59316086.

It is an arithmetic number, because the mean of its divisors is an integer number (3914853096).

Almost surely, 2^15540780341 is an apocalyptic number.

It is an amenable number.

15540780341 is a deficient number, since it is larger than the sum of its proper divisors (118632043).

15540780341 is a wasteful number, since it uses less digits than its factorization.

15540780341 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118632042.

The product of its (nonzero) digits is 67200, while the sum is 38.

The spelling of 15540780341 in words is "fifteen billion, five hundred forty million, seven hundred eighty thousand, three hundred forty-one".