1042661489766 has 48 divisors (see below), whose sum is σ = 2376917547840. Its totient is φ = 303933708000.

The previous prime is 1042661489761. The next prime is 1042661489767. The reversal of 1042661489766 is 6679841662401.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1042661489761) 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, 27040360 + ... + 27078891.

It is an arithmetic number, because the mean of its divisors is an integer number (49519115580).

Almost surely, 2^{1042661489766} is an apocalyptic number.

1042661489766 is an abundant number, since it is smaller than the sum of its proper divisors (1334256058074).

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

1042661489766 is a wasteful number, since it uses less digits than its factorization.

1042661489766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54119301 (or 54119288 counting only the distinct ones).

The product of its (nonzero) digits is 20901888, while the sum is 60.

The spelling of 1042661489766 in words is "one trillion, forty-two billion, six hundred sixty-one million, four hundred eighty-nine thousand, seven hundred sixty-six".