155415340320 has 96 divisors (see below), whose sum is σ = 500943465792. Its totient is φ = 40480269312.

The previous prime is 155415340279. The next prime is 155415340351. The reversal of 155415340320 is 23043514551.

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

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, 3744267 + ... + 3785546.

It is an arithmetic number, because the mean of its divisors is an integer number (5218161102).

Almost surely, 2^155415340320 is an apocalyptic number.

155415340320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

155415340320 is an abundant number, since it is smaller than the sum of its proper divisors (345528125472).

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

155415340320 is a wasteful number, since it uses less digits than its factorization.

155415340320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7529874 (or 7529866 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 33.

Adding to 155415340320 its reverse (23043514551), we get a palindrome (178458854871).

The spelling of 155415340320 in words is "one hundred fifty-five billion, four hundred fifteen million, three hundred forty thousand, three hundred twenty".