155761647427 has 8 divisors (see below), whose sum is σ = 156745207440. Its totient is φ = 154778428800.

The previous prime is 155761647421. The next prime is 155761647469. The reversal of 155761647427 is 724746167551.

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 155761647427 - 2¹¹ = 155761645379 is a prime.

It is a super-3 number, since 3×155761647427³ (a number of 35 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (155761647421) 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, 863199 + ... + 1027927.

It is an arithmetic number, because the mean of its divisors is an integer number (19593150930).

Almost surely, 2^155761647427 is an apocalyptic number.

155761647427 is a deficient number, since it is larger than the sum of its proper divisors (983560013).

155761647427 is a wasteful number, since it uses less digits than its factorization.

155761647427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170693.

The product of its digits is 9878400, while the sum is 55.

The spelling of 155761647427 in words is "one hundred fifty-five billion, seven hundred sixty-one million, six hundred forty-seven thousand, four hundred twenty-seven".