1478756689212 has 48 divisors (see below), whose sum is σ = 3766957818624. Its totient is φ = 447768816000.

The previous prime is 1478756689181. The next prime is 1478756689219. The reversal of 1478756689212 is 2129866578741.

It is a Harshad number since it is a multiple of its sum of digits (66).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1478756689219) 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, 4065864 + ... + 4414607.

It is an arithmetic number, because the mean of its divisors is an integer number (78478287888).

Almost surely, 2^{1478756689212} is an apocalyptic number.

1478756689212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1478756689212 is an abundant number, since it is smaller than the sum of its proper divisors (2288201129412).

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

1478756689212 is a wasteful number, since it uses less digits than its factorization.

1478756689212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8481810 (or 8481808 counting only the distinct ones).

The product of its digits is 81285120, while the sum is 66.

The spelling of 1478756689212 in words is "one trillion, four hundred seventy-eight billion, seven hundred fifty-six million, six hundred eighty-nine thousand, two hundred twelve".