155036643399 has 24 divisors (see below), whose sum is σ = 244856726400. Its totient is φ = 93747540240.

The previous prime is 155036643343. The next prime is 155036643413. The reversal of 155036643399 is 993346630551.

155036643399 is a `hidden beast` number, since 1 + 5 + 503 + 6 + 6 + 43 + 3 + 99 = 666.

It is not a de Polignac number, because 155036643399 - 2¹⁹ = 155036119111 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155036643499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1740169 + ... + 1827090.

It is an arithmetic number, because the mean of its divisors is an integer number (10202363600).

Almost surely, 2^155036643399 is an apocalyptic number.

155036643399 is a deficient number, since it is larger than the sum of its proper divisors (89820083001).

155036643399 is a wasteful number, since it uses less digits than its factorization.

155036643399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3567715 (or 3567712 counting only the distinct ones).

The product of its (nonzero) digits is 7873200, while the sum is 54.

The spelling of 155036643399 in words is "one hundred fifty-five billion, thirty-six million, six hundred forty-three thousand, three hundred ninety-nine".