155553635402240 has 80 divisors (see below), whose sum is σ = 372970752897600. Its totient is φ = 62220351959040.

The previous prime is 155553635402233. The next prime is 155553635402261. The reversal of 155553635402240 is 42204536355551.

It is a tau number, because it is divible by the number of its divisors (80).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 152505461 + ... + 153522059.

It is an arithmetic number, because the mean of its divisors is an integer number (4662134411220).

Almost surely, 2^{155553635402240} is an apocalyptic number.

155553635402240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

155553635402240 is an abundant number, since it is smaller than the sum of its proper divisors (217417117495360).

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

155553635402240 is an equidigital number, since it uses as much as digits as its factorization.

155553635402240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1076393 (or 1076377 counting only the distinct ones).

The product of its (nonzero) digits is 10800000, while the sum is 50.

The spelling of 155553635402240 in words is "one hundred fifty-five trillion, five hundred fifty-three billion, six hundred thirty-five million, four hundred two thousand, two hundred forty".