155305461000 has 128 divisors (see below), whose sum is σ = 486565896960. Its totient is φ = 41242752000.

The previous prime is 155305460977. The next prime is 155305461023. The reversal of 155305461000 is 164503551.

It is an interprime number because it is at equal distance from previous prime (155305460977) and next prime (155305461023).

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 615597 + ... + 830403.

It is an arithmetic number, because the mean of its divisors is an integer number (3801296070).

Almost surely, 2^155305461000 is an apocalyptic number.

155305461000 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 155305461000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (243282948480).

155305461000 is an abundant number, since it is smaller than the sum of its proper divisors (331260435960).

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

155305461000 is a wasteful number, since it uses less digits than its factorization.

155305461000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215072 (or 215058 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 30.

Adding to 155305461000 its reverse (164503551), we get a palindrome (155469964551).

The spelling of 155305461000 in words is "one hundred fifty-five billion, three hundred five million, four hundred sixty-one thousand".