7880001266 has 16 divisors (see below), whose sum is σ = 11907998784. Its totient is φ = 3910777584.

The previous prime is 7880001263. The next prime is 7880001293. The reversal of 7880001266 is 6621000887.

It is not an unprimeable number, because it can be changed into a prime (7880001263) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 118661 + ... + 172743.

It is an arithmetic number, because the mean of its divisors is an integer number (744249924).

Almost surely, 2^7880001266 is an apocalyptic number.

7880001266 is a deficient number, since it is larger than the sum of its proper divisors (4027997518).

7880001266 is a wasteful number, since it uses less digits than its factorization.

7880001266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54625.

The product of its (nonzero) digits is 32256, while the sum is 38.

The square root of 7880001266 is about 88769.3712155268. The cubic root of 7880001266 is about 1989.9496856887.

The spelling of 7880001266 in words is "seven billion, eight hundred eighty million, one thousand, two hundred sixty-six".