2660415155 has 4 divisors (see below), whose sum is σ = 3192498192. Its totient is φ = 2128332120.

The previous prime is 2660415113. The next prime is 2660415239. The reversal of 2660415155 is 5515140662.

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

It is not a de Polignac number, because 2660415155 - 2⁶ = 2660415091 is a prime.

It is a Duffinian 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, 266041511 + ... + 266041520.

It is an arithmetic number, because the mean of its divisors is an integer number (798124548).

Almost surely, 2^2660415155 is an apocalyptic number.

2660415155 is a deficient number, since it is larger than the sum of its proper divisors (532083037).

2660415155 is an equidigital number, since it uses as much as digits as its factorization.

2660415155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 532083036.

The product of its (nonzero) digits is 36000, while the sum is 35.

The square root of 2660415155 is about 51579.2124309784. The cubic root of 2660415155 is about 1385.6380617750.

The spelling of 2660415155 in words is "two billion, six hundred sixty million, four hundred fifteen thousand, one hundred fifty-five".