155561761154 has 8 divisors (see below), whose sum is σ = 234370583568. Its totient is φ = 77438233300.

The previous prime is 155561761141. The next prime is 155561761193. The reversal of 155561761154 is 451167165551.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 155561761099 and 155561761108.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 171323072 + ... + 171323979.

It is an arithmetic number, because the mean of its divisors is an integer number (29296322946).

Almost surely, 2^155561761154 is an apocalyptic number.

155561761154 is a deficient number, since it is larger than the sum of its proper divisors (78808822414).

155561761154 is a wasteful number, since it uses less digits than its factorization.

155561761154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 342647280.

The product of its digits is 630000, while the sum is 47.

The spelling of 155561761154 in words is "one hundred fifty-five billion, five hundred sixty-one million, seven hundred sixty-one thousand, one hundred fifty-four".