1957479881472 has 216 divisors, whose sum is σ = 5688307366560. Its totient is φ = 647373864960.

The previous prime is 1957479881389. The next prime is 1957479881473. The reversal of 1957479881472 is 2741889747591.

1957479881472 is a `hidden beast` number, since 1 + 9 + 5 + 7 + 4 + 79 + 8 + 81 + 472 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a self number, because there is not a number n which added to its sum of digits gives 1957479881472.

It is not an unprimeable number, because it can be changed into a prime (1957479881473) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 218928522 + ... + 218937462.

Almost surely, 2^{1957479881472} is an apocalyptic number.

1957479881472 is a gapful number since it is divisible by the number (12) 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 1957479881472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2844153683280).

1957479881472 is an abundant number, since it is smaller than the sum of its proper divisors (3730827485088).

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

1957479881472 is a wasteful number, since it uses less digits than its factorization.

1957479881472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9699 (or 9682 counting only the distinct ones).

The product of its digits is 284497920, while the sum is 72.

The spelling of 1957479881472 in words is "one trillion, nine hundred fifty-seven billion, four hundred seventy-nine million, eight hundred eighty-one thousand, four hundred seventy-two".