155040304464415 has 4 divisors (see below), whose sum is σ = 186048365357304. Its totient is φ = 124032243571528.

The previous prime is 155040304464317. The next prime is 155040304464503. The reversal of 155040304464415 is 514464403040551.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-155040304464415 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15504030446437 + ... + 15504030446446.

It is an arithmetic number, because the mean of its divisors is an integer number (46512091339326).

Almost surely, 2^{155040304464415} is an apocalyptic number.

155040304464415 is a deficient number, since it is larger than the sum of its proper divisors (31008060892889).

155040304464415 is an equidigital number, since it uses as much as digits as its factorization.

155040304464415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31008060892888.

The product of its (nonzero) digits is 2304000, while the sum is 46.

The spelling of 155040304464415 in words is "one hundred fifty-five trillion, forty billion, three hundred four million, four hundred sixty-four thousand, four hundred fifteen".