155053241534640 has 80 divisors (see below), whose sum is σ = 488811914035200. Its totient is φ = 40646725460736.

The previous prime is 155053241534627. The next prime is 155053241534647. The reversal of 155053241534640 is 46435142350551.

It is a happy number.

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

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 155053241534640.

It is not an unprimeable number, because it can be changed into a prime (155053241534647) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5475029680 + ... + 5475057999.

It is an arithmetic number, because the mean of its divisors is an integer number (6110148925440).

Almost surely, 2^{155053241534640} is an apocalyptic number.

155053241534640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

155053241534640 is an abundant number, since it is smaller than the sum of its proper divisors (333758672500560).

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

155053241534640 is a wasteful number, since it uses less digits than its factorization.

155053241534640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10950087754 (or 10950087748 counting only the distinct ones).

The product of its (nonzero) digits is 4320000, while the sum is 48.

The spelling of 155053241534640 in words is "one hundred fifty-five trillion, fifty-three billion, two hundred forty-one million, five hundred thirty-four thousand, six hundred forty".