1131261266416 has 20 divisors (see below), whose sum is σ = 2201474299752. Its totient is φ = 563138866496.

The previous prime is 1131261266363. The next prime is 1131261266449. The reversal of 1131261266416 is 6146621621311.

It is a congruent number.

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, 155731675 + ... + 155738938.

Almost surely, 2^{1131261266416} is an apocalyptic number.

1131261266416 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1131261266416 is a deficient number, since it is larger than the sum of its proper divisors (1070213033336).

1131261266416 is a wasteful number, since it uses less digits than its factorization.

1131261266416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311470848 (or 311470842 counting only the distinct ones).

The product of its digits is 62208, while the sum is 40.

Adding to 1131261266416 its reverse (6146621621311), we get a palindrome (7277882887727).

The spelling of 1131261266416 in words is "one trillion, one hundred thirty-one billion, two hundred sixty-one million, two hundred sixty-six thousand, four hundred sixteen".