155001600000 has 1440 divisors, whose sum is σ = 650295565920. Its totient is φ = 36495360000.

The previous prime is 155001599999. The next prime is 155001600029. The reversal of 155001600000 is 6100551.

155001600000 is a `hidden beast` number, since 1 + 5 + 500 + 160 + 0 + 0 + 0 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (1440).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 6739199989 + ... + 6739200011.

It is an arithmetic number, because the mean of its divisors is an integer number (451594143).

Almost surely, 2^155001600000 is an apocalyptic number.

155001600000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 155001600000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (325147782960).

155001600000 is an abundant number, since it is smaller than the sum of its proper divisors (495293965920).

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

155001600000 is an frugal number, since it uses more digits than its factorization.

155001600000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95 (or 46 counting only the distinct ones).

The product of its (nonzero) digits is 150, while the sum is 18.

Adding to 155001600000 its reverse (6100551), we get a palindrome (155007700551).

The spelling of 155001600000 in words is "one hundred fifty-five billion, one million, six hundred thousand".