155263936511 has 16 divisors (see below), whose sum is σ = 160649717760. Its totient is φ = 149902129440.

The previous prime is 155263936507. The next prime is 155263936519. The reversal of 155263936511 is 115639362551.

It is a cyclic number.

It is not a de Polignac number, because 155263936511 - 2² = 155263936507 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155263936519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40045505 + ... + 40049381.

It is an arithmetic number, because the mean of its divisors is an integer number (10040607360).

Almost surely, 2^155263936511 is an apocalyptic number.

155263936511 is a deficient number, since it is larger than the sum of its proper divisors (5385781249).

155263936511 is a wasteful number, since it uses less digits than its factorization.

155263936511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6614.

The product of its digits is 729000, while the sum is 47.

The spelling of 155263936511 in words is "one hundred fifty-five billion, two hundred sixty-three million, nine hundred thirty-six thousand, five hundred eleven".