155579338547 has 2 divisors, whose sum is σ = 155579338548. Its totient is φ = 155579338546.

The previous prime is 155579338543. The next prime is 155579338589. The reversal of 155579338547 is 745833975551.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 155579338547 - 2² = 155579338543 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 155579338547.

It is not a weakly prime, because it can be changed into another prime (155579338543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77789669273 + 77789669274.

It is an arithmetic number, because the mean of its divisors is an integer number (77789669274).

Almost surely, 2^155579338547 is an apocalyptic number.

155579338547 is a deficient number, since it is larger than the sum of its proper divisors (1).

155579338547 is an equidigital number, since it uses as much as digits as its factorization.

155579338547 is an evil number, because the sum of its binary digits is even.

The product of its digits is 79380000, while the sum is 62.

The spelling of 155579338547 in words is "one hundred fifty-five billion, five hundred seventy-nine million, three hundred thirty-eight thousand, five hundred forty-seven".