1571645049948 has 120 divisors (see below), whose sum is σ = 4290772524192. Its totient is φ = 500689575936.

The previous prime is 1571645049893. The next prime is 1571645049967. The reversal of 1571645049948 is 8499405461751.

1571645049948 is a `hidden beast` number, since 1 + 57 + 1 + 6 + 4 + 50 + 499 + 48 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 8982436 + ... + 9155732.

Almost surely, 2^{1571645049948} is an apocalyptic number.

1571645049948 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1571645049948, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2145386262096).

1571645049948 is an abundant number, since it is smaller than the sum of its proper divisors (2719127474244).

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

1571645049948 is a wasteful number, since it uses less digits than its factorization.

1571645049948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174553 (or 174542 counting only the distinct ones).

The product of its (nonzero) digits is 43545600, while the sum is 63.

The spelling of 1571645049948 in words is "one trillion, five hundred seventy-one billion, six hundred forty-five million, forty-nine thousand, nine hundred forty-eight".