1387400005729 has 16 divisors (see below), whose sum is σ = 1414853015040. Its totient is φ = 1360103492160.

The previous prime is 1387400005723. The next prime is 1387400005769. The reversal of 1387400005729 is 9275000047831.

It is not a de Polignac number, because 1387400005729 - 2¹¹ = 1387400003681 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1387400005723) 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, 38241252 + ... + 38277514.

It is an arithmetic number, because the mean of its divisors is an integer number (88428313440).

Almost surely, 2^{1387400005729} is an apocalyptic number.

It is an amenable number.

1387400005729 is a deficient number, since it is larger than the sum of its proper divisors (27453009311).

1387400005729 is a wasteful number, since it uses less digits than its factorization.

1387400005729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38400.

The product of its (nonzero) digits is 423360, while the sum is 46.

The spelling of 1387400005729 in words is "one trillion, three hundred eighty-seven billion, four hundred million, five thousand, seven hundred twenty-nine".