1247473539012 has 12 divisors (see below), whose sum is σ = 2910771591056. Its totient is φ = 415824513000.

The previous prime is 1247473538933. The next prime is 1247473539029. The reversal of 1247473539012 is 2109353747421.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×1247473539012² (a number of 25 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51978064114 + ... + 51978064137.

Almost surely, 2^{1247473539012} is an apocalyptic number.

1247473539012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1247473539012 is an abundant number, since it is smaller than the sum of its proper divisors (1663298052044).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1247473539012 is a wasteful number, since it uses less digits than its factorization.

1247473539012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103956128258 (or 103956128256 counting only the distinct ones).

The product of its (nonzero) digits is 1270080, while the sum is 48.

The spelling of 1247473539012 in words is "one trillion, two hundred forty-seven billion, four hundred seventy-three million, five hundred thirty-nine thousand, twelve".