155053440000 has 660 divisors, whose sum is σ = 580765489304. Its totient is φ = 41306112000.

The previous prime is 155053439971. The next prime is 155053440023. The reversal of 155053440000 is 44350551.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 155519502 + ... + 155520498.

Almost surely, 2^155053440000 is an apocalyptic number.

155053440000 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 155053440000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (290382744652).

155053440000 is an abundant number, since it is smaller than the sum of its proper divisors (425712049304).

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

155053440000 is an frugal number, since it uses more digits than its factorization.

155053440000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1052 (or 1007 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

Adding to 155053440000 its reverse (44350551), we get a palindrome (155097790551).

The spelling of 155053440000 in words is "one hundred fifty-five billion, fifty-three million, four hundred forty thousand".