1247887146000 has 160 divisors (see below), whose sum is σ = 4388932768896. Its totient is φ = 302518080000.

The previous prime is 1247887145993. The next prime is 1247887146007. The reversal of 1247887146000 is 6417887421.

It is an interprime number because it is at equal distance from previous prime (1247887145993) and next prime (1247887146007).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (1247887146007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9387691 + ... + 9519690.

Almost surely, 2^{1247887146000} is an apocalyptic number.

1247887146000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1247887146000 is an abundant number, since it is smaller than the sum of its proper divisors (3141045622896).

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

1247887146000 is a wasteful number, since it uses less digits than its factorization.

1247887146000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18907418 (or 18907402 counting only the distinct ones).

The product of its (nonzero) digits is 602112, while the sum is 48.

The spelling of 1247887146000 in words is "one trillion, two hundred forty-seven billion, eight hundred eighty-seven million, one hundred forty-six thousand".