1061510616666 has 24 divisors (see below), whose sum is σ = 2313711769824. Its totient is φ = 351718087560.

The previous prime is 1061510616641. The next prime is 1061510616689. The reversal of 1061510616666 is 6666160151601.

It is a super-2 number, since 2×1061510616666² (a number of 25 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

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, 176562300 + ... + 176568311.

It is an arithmetic number, because the mean of its divisors is an integer number (96404657076).

Almost surely, 2^{1061510616666} is an apocalyptic number.

1061510616666 is an abundant number, since it is smaller than the sum of its proper divisors (1252201153158).

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

1061510616666 is a wasteful number, since it uses less digits than its factorization.

1061510616666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 353130786 (or 353130783 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 45.

The spelling of 1061510616666 in words is "one trillion, sixty-one billion, five hundred ten million, six hundred sixteen thousand, six hundred sixty-six".