155061322747 has 4 divisors (see below), whose sum is σ = 155070164160. Its totient is φ = 155052481336.

The previous prime is 155061322733. The next prime is 155061322753. The reversal of 155061322747 is 747223160551.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-155061322747 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (155061322447) 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, 4394347 + ... + 4429492.

It is an arithmetic number, because the mean of its divisors is an integer number (38767541040).

Almost surely, 2^155061322747 is an apocalyptic number.

155061322747 is a deficient number, since it is larger than the sum of its proper divisors (8841413).

155061322747 is an equidigital number, since it uses as much as digits as its factorization.

155061322747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8841412.

The product of its (nonzero) digits is 352800, while the sum is 43.

The spelling of 155061322747 in words is "one hundred fifty-five billion, sixty-one million, three hundred twenty-two thousand, seven hundred forty-seven".