1275630385401 has 48 divisors (see below), whose sum is σ = 1968468203520. Its totient is φ = 794258640000.

The previous prime is 1275630385357. The next prime is 1275630385417. The reversal of 1275630385401 is 1045830365721.

It is a happy number.

1275630385401 is a `hidden beast` number, since 1 + 2 + 7 + 5 + 630 + 3 + 8 + 5 + 4 + 0 + 1 = 666.

It is not a de Polignac number, because 1275630385401 - 2¹¹ = 1275630383353 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1275630385301) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 18988411 + ... + 19055471.

It is an arithmetic number, because the mean of its divisors is an integer number (41009754240).

Almost surely, 2^{1275630385401} is an apocalyptic number.

It is an amenable number.

1275630385401 is a deficient number, since it is larger than the sum of its proper divisors (692837818119).

1275630385401 is a wasteful number, since it uses less digits than its factorization.

1275630385401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69478 (or 69475 counting only the distinct ones).

The product of its (nonzero) digits is 604800, while the sum is 45.

The spelling of 1275630385401 in words is "one trillion, two hundred seventy-five billion, six hundred thirty million, three hundred eighty-five thousand, four hundred one".