15554242155 has 8 divisors (see below), whose sum is σ = 24886787472. Its totient is φ = 8295595808.

The previous prime is 15554242153. The next prime is 15554242159. The reversal of 15554242155 is 55124245551.

It is a happy number.

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 15554242155 - 2¹ = 15554242153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (15554242153) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 518474724 + ... + 518474753.

It is an arithmetic number, because the mean of its divisors is an integer number (3110848434).

Almost surely, 2^15554242155 is an apocalyptic number.

15554242155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

15554242155 is a deficient number, since it is larger than the sum of its proper divisors (9332545317).

15554242155 is a wasteful number, since it uses less digits than its factorization.

15554242155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1036949485.

The product of its digits is 200000, while the sum is 39.

The spelling of 15554242155 in words is "fifteen billion, five hundred fifty-four million, two hundred forty-two thousand, one hundred fifty-five".