152561506236440 has 128 divisors (see below), whose sum is σ = 405913482576000. Its totient is φ = 50492560785408.

The previous prime is 152561506236421. The next prime is 152561506236449. The reversal of 152561506236440 is 44632605165251.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (152561506236449) 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, 36925064 + ... + 40848296.

It is an arithmetic number, because the mean of its divisors is an integer number (3171199082625).

Almost surely, 2^{152561506236440} is an apocalyptic number.

152561506236440 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 152561506236440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (202956741288000).

152561506236440 is an abundant number, since it is smaller than the sum of its proper divisors (253351976339560).

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

152561506236440 is a wasteful number, since it uses less digits than its factorization.

152561506236440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3928069 (or 3928065 counting only the distinct ones).

The product of its (nonzero) digits is 5184000, while the sum is 50.

The spelling of 152561506236440 in words is "one hundred fifty-two trillion, five hundred sixty-one billion, five hundred six million, two hundred thirty-six thousand, four hundred forty".