1557466647552 has 66 divisors (see below), whose sum is σ = 4497151172228. Its totient is φ = 519155546112.

The previous prime is 1557466647547. The next prime is 1557466647559. The reversal of 1557466647552 is 2557466647551.

It is a super-3 number, since 3×1557466647552³ (a number of 38 digits) contains 333 as substring.

It is a hoax number, since the sum of its digits (63) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 1557466647552.

It is not an unprimeable number, because it can be changed into a prime (1557466647559) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 84488758 + ... + 84507189.

Almost surely, 2^{1557466647552} is an apocalyptic number.

1557466647552 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1557466647552 is an abundant number, since it is smaller than the sum of its proper divisors (2939684524676).

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

1557466647552 is a wasteful number, since it uses less digits than its factorization.

1557466647552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168995973 (or 168995952 counting only the distinct ones).

The product of its digits is 211680000, while the sum is 63.

Subtracting 1557466647552 from its reverse (2557466647551), we obtain a palindrome (999999999999).

The spelling of 1557466647552 in words is "one trillion, five hundred fifty-seven billion, four hundred sixty-six million, six hundred forty-seven thousand, five hundred fifty-two".