2666949155 has 16 divisors (see below), whose sum is σ = 3627916320. Its totient is φ = 1865783808.

The previous prime is 2666949151. The next prime is 2666949157. The reversal of 2666949155 is 5519496662.

It is a cyclic number.

It is not a de Polignac number, because 2666949155 - 2² = 2666949151 is a prime.

It is a super-2 number, since 2×2666949155² = 14225235590710428050, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2666949097 and 2666949106.

It is not an unprimeable number, because it can be changed into a prime (2666949151) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1078502 + ... + 1080971.

It is an arithmetic number, because the mean of its divisors is an integer number (226744770).

Almost surely, 2^2666949155 is an apocalyptic number.

2666949155 is a deficient number, since it is larger than the sum of its proper divisors (960967165).

2666949155 is a wasteful number, since it uses less digits than its factorization.

2666949155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2159510.

The product of its digits is 3499200, while the sum is 53.

The square root of 2666949155 is about 51642.5130585257. The cubic root of 2666949155 is about 1386.7715135900.

The spelling of 2666949155 in words is "two billion, six hundred sixty-six million, nine hundred forty-nine thousand, one hundred fifty-five".