155022055566542 has 64 divisors (see below), whose sum is σ = 239678783647488. Its totient is φ = 75172539456000.

The previous prime is 155022055566523. The next prime is 155022055566583. The reversal of 155022055566542 is 245665550220551.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4040064617 + ... + 4040102987.

It is an arithmetic number, because the mean of its divisors is an integer number (3744980994492).

Almost surely, 2^{155022055566542} is an apocalyptic number.

155022055566542 is a deficient number, since it is larger than the sum of its proper divisors (84656728080946).

155022055566542 is a wasteful number, since it uses less digits than its factorization.

155022055566542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40065.

The product of its (nonzero) digits is 18000000, while the sum is 53.

The spelling of 155022055566542 in words is "one hundred fifty-five trillion, twenty-two billion, fifty-five million, five hundred sixty-six thousand, five hundred forty-two".