4261066561650 has 48 divisors (see below), whose sum is σ = 11026899215424. Its totient is φ = 1086880745280.

The previous prime is 4261066561649. The next prime is 4261066561657. The reversal of 4261066561650 is 561656601624.

It is a self number, because there is not a number n which added to its sum of digits gives 4261066561650.

It is not an unprimeable number, because it can be changed into a prime (4261066561657) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 617542429 + ... + 617549328.

It is an arithmetic number, because the mean of its divisors is an integer number (229727066988).

Almost surely, 2^{4261066561650} is an apocalyptic number.

4261066561650 is an abundant number, since it is smaller than the sum of its proper divisors (6765832653774).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4261066561650 is a wasteful number, since it uses less digits than its factorization.

4261066561650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1235091795 (or 1235091790 counting only the distinct ones).

The product of its (nonzero) digits is 1555200, while the sum is 48.

The spelling of 4261066561650 in words is "four trillion, two hundred sixty-one billion, sixty-six million, five hundred sixty-one thousand, six hundred fifty".