155106500377440 has 96 divisors (see below), whose sum is σ = 488608342840800. Its totient is φ = 41359797633024.

The previous prime is 155106500377417. The next prime is 155106500377459. The reversal of 155106500377440 is 44773005601551.

155106500377440 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (96).

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 155106500377440.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2719536 + ... + 17821584.

It is an arithmetic number, because the mean of its divisors is an integer number (5089670237925).

Almost surely, 2^{155106500377440} is an apocalyptic number.

155106500377440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

155106500377440 is an abundant number, since it is smaller than the sum of its proper divisors (333501842463360).

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

155106500377440 is a wasteful number, since it uses less digits than its factorization.

155106500377440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15123464 (or 15123456 counting only the distinct ones).

The product of its (nonzero) digits is 1764000, while the sum is 48.

Adding to 155106500377440 its reverse (44773005601551), we get a palindrome (199879505978991).

The spelling of 155106500377440 in words is "one hundred fifty-five trillion, one hundred six billion, five hundred million, three hundred seventy-seven thousand, four hundred forty".