155418509156416 has 63 divisors (see below), whose sum is σ = 338996974288287. Its totient is φ = 70644278221440.

The previous prime is 155418509156321. The next prime is 155418509156423. The reversal of 155418509156416 is 614651905814551.

The square root of 155418509156416 is 12466696.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1096998415 + ... + 1097140081.

Almost surely, 2^{155418509156416} is an apocalyptic number.

155418509156416 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

155418509156416 is the 12466696-th square number.

It is an amenable number.

155418509156416 is an abundant number, since it is smaller than the sum of its proper divisors (183578465131871).

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

155418509156416 is an frugal number, since it uses more digits than its factorization.

155418509156416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 283368 (or 141680 counting only the distinct ones).

The product of its (nonzero) digits is 25920000, while the sum is 61.

The spelling of 155418509156416 in words is "one hundred fifty-five trillion, four hundred eighteen billion, five hundred nine million, one hundred fifty-six thousand, four hundred sixteen".