2661326063450 has 24 divisors (see below), whose sum is σ = 4978679595228. Its totient is φ = 1058377066880.

The previous prime is 2661326063449. The next prime is 2661326063479. The reversal of 2661326063450 is 543606231662.

2661326063450 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 1271867428441 + 1389458635009 = 1127771^2 + 1178753^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 153825227 + ... + 153842526.

Almost surely, 2^{2661326063450} is an apocalyptic number.

2661326063450 is a deficient number, since it is larger than the sum of its proper divisors (2317353531778).

2661326063450 is a wasteful number, since it uses less digits than its factorization.

2661326063450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307667938 (or 307667933 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 44.

The spelling of 2661326063450 in words is "two trillion, six hundred sixty-one billion, three hundred twenty-six million, sixty-three thousand, four hundred fifty".