1375658621875 has 12 divisors (see below), whose sum is σ = 1719463228560. Its totient is φ = 1100526895000.

The previous prime is 1375658621873. The next prime is 1375658621903. The reversal of 1375658621875 is 5781268565731.

It is not a de Polignac number, because 1375658621875 - 2¹ = 1375658621873 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1375658621873) 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, 220102255 + ... + 220108504.

It is an arithmetic number, because the mean of its divisors is an integer number (143288602380).

Almost surely, 2^{1375658621875} is an apocalyptic number.

1375658621875 is a deficient number, since it is larger than the sum of its proper divisors (343804606685).

1375658621875 is an frugal number, since it uses more digits than its factorization.

1375658621875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 440210784 (or 440210764 counting only the distinct ones).

The product of its digits is 84672000, while the sum is 64.

The spelling of 1375658621875 in words is "one trillion, three hundred seventy-five billion, six hundred fifty-eight million, six hundred twenty-one thousand, eight hundred seventy-five".