2651880391208 has 16 divisors (see below), whose sum is σ = 4991623113780. Its totient is φ = 1320780894208.

The previous prime is 2651880391109. The next prime is 2651880391261. The reversal of 2651880391208 is 8021930881562.

It can be written as a sum of positive squares in 2 ways, for example, as 2418454199044 + 233426192164 = 1555138^2 + 483142^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2651880391208.

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, 644910491 + ... + 644914602.

Almost surely, 2^{2651880391208} is an apocalyptic number.

It is an amenable number.

2651880391208 is a deficient number, since it is larger than the sum of its proper divisors (2339742722572).

2651880391208 is a wasteful number, since it uses less digits than its factorization.

2651880391208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1289825356 (or 1289825352 counting only the distinct ones).

The product of its (nonzero) digits is 1658880, while the sum is 53.

The spelling of 2651880391208 in words is "two trillion, six hundred fifty-one billion, eight hundred eighty million, three hundred ninety-one thousand, two hundred eight".