1313365511772 has 72 divisors (see below), whose sum is σ = 3457317252480. Its totient is φ = 419916994560.

The previous prime is 1313365511747. The next prime is 1313365511827. The reversal of 1313365511772 is 2771155633131.

It is a happy number.

1313365511772 is a `hidden beast` number, since 1 + 3 + 1 + 3 + 3 + 65 + 511 + 7 + 72 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5081197 + ... + 5333412.

Almost surely, 2^{1313365511772} is an apocalyptic number.

1313365511772 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1313365511772 is an abundant number, since it is smaller than the sum of its proper divisors (2143951740708).

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

1313365511772 is a wasteful number, since it uses less digits than its factorization.

1313365511772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10414763 (or 10414758 counting only the distinct ones).

The product of its digits is 396900, while the sum is 45.

The spelling of 1313365511772 in words is "one trillion, three hundred thirteen billion, three hundred sixty-five million, five hundred eleven thousand, seven hundred seventy-two".