1260131776550 has 24 divisors (see below), whose sum is σ = 2344061918352. Its totient is φ = 504006084000.

The previous prime is 1260131776487. The next prime is 1260131776559. The reversal of 1260131776550 is 556771310621.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1260131776559) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 617186 + ... + 1703285.

It is an arithmetic number, because the mean of its divisors is an integer number (97669246598).

Almost surely, 2^{1260131776550} is an apocalyptic number.

1260131776550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1260131776550 is a deficient number, since it is larger than the sum of its proper divisors (1083930141802).

1260131776550 is a wasteful number, since it uses less digits than its factorization.

1260131776550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2331344 (or 2331339 counting only the distinct ones).

The product of its (nonzero) digits is 264600, while the sum is 44.

The spelling of 1260131776550 in words is "one trillion, two hundred sixty billion, one hundred thirty-one million, seven hundred seventy-six thousand, five hundred fifty".