155974272943 has 2 divisors, whose sum is σ = 155974272944. Its totient is φ = 155974272942.

The previous prime is 155974272931. The next prime is 155974272977. The reversal of 155974272943 is 349272479551.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 155974272943 - 2⁵ = 155974272911 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (155974272913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77987136471 + 77987136472.

It is an arithmetic number, because the mean of its divisors is an integer number (77987136472).

Almost surely, 2^155974272943 is an apocalyptic number.

155974272943 is a deficient number, since it is larger than the sum of its proper divisors (1).

155974272943 is an equidigital number, since it uses as much as digits as its factorization.

155974272943 is an evil number, because the sum of its binary digits is even.

The product of its digits is 19051200, while the sum is 58.

The spelling of 155974272943 in words is "one hundred fifty-five billion, nine hundred seventy-four million, two hundred seventy-two thousand, nine hundred forty-three".