1447397381870 has 16 divisors (see below), whose sum is σ = 2842162131888. Its totient is φ = 526326320640.

The previous prime is 1447397381869. The next prime is 1447397381993. The reversal of 1447397381870 is 781837937441.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6579078899 + ... + 6579079118.

It is an arithmetic number, because the mean of its divisors is an integer number (177635133243).

Almost surely, 2^{1447397381870} is an apocalyptic number.

1447397381870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1447397381870 is a deficient number, since it is larger than the sum of its proper divisors (1394764750018).

1447397381870 is a wasteful number, since it uses less digits than its factorization.

1447397381870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13158158035.

The product of its (nonzero) digits is 28449792, while the sum is 62.

The spelling of 1447397381870 in words is "one trillion, four hundred forty-seven billion, three hundred ninety-seven million, three hundred eighty-one thousand, eight hundred seventy".