155220986347 has 4 divisors (see below), whose sum is σ = 177395412976. Its totient is φ = 133046559720.

The previous prime is 155220986309. The next prime is 155220986363. The reversal of 155220986347 is 743689022551.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 155220986347 - 2¹¹ = 155220984299 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 155220986294 and 155220986303.

It is not an unprimeable number, because it can be changed into a prime (155220986387) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11087213304 + ... + 11087213317.

It is an arithmetic number, because the mean of its divisors is an integer number (44348853244).

It is a 1-persistent number, because it is pandigital, but 2⋅155220986347 = 310441972694 is not.

Almost surely, 2^155220986347 is an apocalyptic number.

155220986347 is a deficient number, since it is larger than the sum of its proper divisors (22174426629).

155220986347 is an equidigital number, since it uses as much as digits as its factorization.

155220986347 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22174426628.

The product of its (nonzero) digits is 3628800, while the sum is 52.

The spelling of 155220986347 in words is "one hundred fifty-five billion, two hundred twenty million, nine hundred eighty-six thousand, three hundred forty-seven".