561151171555 has 8 divisors (see below), whose sum is σ = 725179975632. Its totient is φ = 414388557408.

The previous prime is 561151171549. The next prime is 561151171577. The reversal of 561151171555 is 555171151165.

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 561151171555 - 2¹¹ = 561151169507 is a prime.

It is a super-3 number, since 3×561151171555³ (a number of 36 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4316547409 + ... + 4316547538.

It is an arithmetic number, because the mean of its divisors is an integer number (90647496954).

Almost surely, 2^561151171555 is an apocalyptic number.

561151171555 is a deficient number, since it is larger than the sum of its proper divisors (164028804077).

561151171555 is a wasteful number, since it uses less digits than its factorization.

561151171555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8633094965.

The product of its digits is 131250, while the sum is 43.

The spelling of 561151171555 in words is "five hundred sixty-one billion, one hundred fifty-one million, one hundred seventy-one thousand, five hundred fifty-five".