155142023556 has 96 divisors (see below), whose sum is σ = 411365364480. Its totient is φ = 45147396096.

The previous prime is 155142023549. The next prime is 155142023567. The reversal of 155142023556 is 655320241551.

It is a Harshad number since it is a multiple of its sum of digits (39).

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, 76416 + ... + 562248.

It is an arithmetic number, because the mean of its divisors is an integer number (4285055880).

Almost surely, 2^155142023556 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 155142023556, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (205682682240).

155142023556 is an abundant number, since it is smaller than the sum of its proper divisors (256223340924).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

155142023556 is a wasteful number, since it uses less digits than its factorization.

155142023556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 485965 (or 485963 counting only the distinct ones).

The product of its (nonzero) digits is 180000, while the sum is 39.

The spelling of 155142023556 in words is "one hundred fifty-five billion, one hundred forty-two million, twenty-three thousand, five hundred fifty-six".