1263777652641 has 16 divisors (see below), whose sum is σ = 1928760743808. Its totient is φ = 721032038400.

The previous prime is 1263777652639. The next prime is 1263777652733. The reversal of 1263777652641 is 1462567773621.

It is not a de Polignac number, because 1263777652641 - 2¹ = 1263777652639 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1263777651641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46928730 + ... + 46955651.

It is an arithmetic number, because the mean of its divisors is an integer number (120547546488).

Almost surely, 2^{1263777652641} is an apocalyptic number.

It is an amenable number.

1263777652641 is a deficient number, since it is larger than the sum of its proper divisors (664983091167).

1263777652641 is an equidigital number, since it uses as much as digits as its factorization.

1263777652641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93885032.

The product of its digits is 17781120, while the sum is 57.

The spelling of 1263777652641 in words is "one trillion, two hundred sixty-three billion, seven hundred seventy-seven million, six hundred fifty-two thousand, six hundred forty-one".