155852742273 has 8 divisors (see below), whose sum is σ = 220027400928. Its totient is φ = 97789955904.

The previous prime is 155852742251. The next prime is 155852742281. The reversal of 155852742273 is 372247258551.

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

It is not a de Polignac number, because 155852742273 - 2²¹ = 155850645121 is a prime.

It is a super-2 number, since 2×155852742273² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (51), and also a Moran number because the ratio is a prime number: 3055936123 = 155852742273 / (1 + 5 + 5 + 8 + 5 + 2 + 7 + 4 + 2 + 2 + 7 + 3).

It is not an unprimeable number, because it can be changed into a prime (155852742173) 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, 1527968011 + ... + 1527968112.

It is an arithmetic number, because the mean of its divisors is an integer number (27503425116).

Almost surely, 2^155852742273 is an apocalyptic number.

It is an amenable number.

155852742273 is a deficient number, since it is larger than the sum of its proper divisors (64174658655).

155852742273 is a wasteful number, since it uses less digits than its factorization.

155852742273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3055936143.

The product of its digits is 4704000, while the sum is 51.

The spelling of 155852742273 in words is "one hundred fifty-five billion, eight hundred fifty-two million, seven hundred forty-two thousand, two hundred seventy-three".