2321540155554 has 8 divisors (see below), whose sum is σ = 4643080311120. Its totient is φ = 773846718516.

The previous prime is 2321540155553. The next prime is 2321540155589. The reversal of 2321540155554 is 4555510451232.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

2321540155554 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (2321540155553) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 193461679624 + ... + 193461679635.

It is an arithmetic number, because the mean of its divisors is an integer number (580385038890).

Almost surely, 2^{2321540155554} is an apocalyptic number.

2321540155554 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

2321540155554 is a wasteful number, since it uses less digits than its factorization.

2321540155554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 386923359264.

The product of its (nonzero) digits is 600000, while the sum is 42.

The spelling of 2321540155554 in words is "two trillion, three hundred twenty-one billion, five hundred forty million, one hundred fifty-five thousand, five hundred fifty-four".