155453851906240 has 224 divisors, whose sum is σ = 374806614571200. Its totient is φ = 61407716966400.

The previous prime is 155453851906229. The next prime is 155453851906267. The reversal of 155453851906240 is 42609158354551.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19825764720 + ... + 19825772560.

It is an arithmetic number, because the mean of its divisors is an integer number (1673243815050).

Almost surely, 2^{155453851906240} is an apocalyptic number.

155453851906240 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 155453851906240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (187403307285600).

155453851906240 is an abundant number, since it is smaller than the sum of its proper divisors (219352762664960).

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

155453851906240 is a wasteful number, since it uses less digits than its factorization.

155453851906240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9891 (or 9881 counting only the distinct ones).

The product of its (nonzero) digits is 25920000, while the sum is 58.

The spelling of 155453851906240 in words is "one hundred fifty-five trillion, four hundred fifty-three billion, eight hundred fifty-one million, nine hundred six thousand, two hundred forty".