1277553045023 has 4 divisors (see below), whose sum is σ = 1352703224160. Its totient is φ = 1202402865888.

The previous prime is 1277553044983. The next prime is 1277553045037. The reversal of 1277553045023 is 3205403557721.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1277553045023 - 2⁸ = 1277553044767 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1277553345023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37575089543 + ... + 37575089576.

It is an arithmetic number, because the mean of its divisors is an integer number (338175806040).

Almost surely, 2^{1277553045023} is an apocalyptic number.

1277553045023 is a deficient number, since it is larger than the sum of its proper divisors (75150179137).

1277553045023 is an equidigital number, since it uses as much as digits as its factorization.

1277553045023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75150179136.

The product of its (nonzero) digits is 882000, while the sum is 44.

The spelling of 1277553045023 in words is "one trillion, two hundred seventy-seven billion, five hundred fifty-three million, forty-five thousand, twenty-three".