151556000020 has 192 divisors, whose sum is σ = 350558208000. Its totient is φ = 54843070464.

The previous prime is 151555999999. The next prime is 151556000023. The reversal of 151556000020 is 20000655151.

It is a super-2 number, since 2×151556000020² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (151556000023) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 145866661 + ... + 145867699.

It is an arithmetic number, because the mean of its divisors is an integer number (1825824000).

Almost surely, 2^151556000020 is an apocalyptic number.

151556000020 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 151556000020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (175279104000).

151556000020 is an abundant number, since it is smaller than the sum of its proper divisors (199002207980).

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

151556000020 is a wasteful number, since it uses less digits than its factorization.

151556000020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1302 (or 1300 counting only the distinct ones).

The product of its (nonzero) digits is 1500, while the sum is 25.

Adding to 151556000020 its reverse (20000655151), we get a palindrome (171556655171).

The spelling of 151556000020 in words is "one hundred fifty-one billion, five hundred fifty-six million, twenty", and thus it is an aban number.