16155543000 has 128 divisors (see below), whose sum is σ = 50803384320. Its totient is φ = 4274121600.

The previous prime is 16155542993. The next prime is 16155543007. The reversal of 16155543000 is 34555161.

It is an interprime number because it is at equal distance from previous prime (16155542993) and next prime (16155543007).

It is a super-2 number, since 2×16155543000² (a number of 21 digits) contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16155543007) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 359799 + ... + 402201.

It is an arithmetic number, because the mean of its divisors is an integer number (396901440).

Almost surely, 2^16155543000 is an apocalyptic number.

16155543000 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 16155543000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25401692160).

16155543000 is an abundant number, since it is smaller than the sum of its proper divisors (34647841320).

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

16155543000 is a wasteful number, since it uses less digits than its factorization.

16155543000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42554 (or 42540 counting only the distinct ones).

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

The spelling of 16155543000 in words is "sixteen billion, one hundred fifty-five million, five hundred forty-three thousand".