1047496981729 has 81 divisors (see below), whose sum is σ = 1251186957489. Its totient is φ = 876174765840.

The previous prime is 1047496981709. The next prime is 1047496981787. The reversal of 1047496981729 is 9271896947401.

The square root of 1047496981729 is 1023473.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 1047496981729 - 2⁵ = 1047496981697 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1047496981709) by changing a digit.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 12620445522 + ... + 12620445604.

Almost surely, 2^{1047496981729} is an apocalyptic number.

1047496981729 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

1047496981729 is the 1023473-rd square number.

1047496981729 is the 511737-th centered octagonal number.

It is an amenable number.

1047496981729 is a deficient number, since it is larger than the sum of its proper divisors (203689975760).

1047496981729 is an frugal number, since it uses more digits than its factorization.

1047496981729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 344 (or 172 counting only the distinct ones).

The product of its (nonzero) digits is 54867456, while the sum is 67.

The spelling of 1047496981729 in words is "one trillion, forty-seven billion, four hundred ninety-six million, nine hundred eighty-one thousand, seven hundred twenty-nine".