1248471143561 has 8 divisors (see below), whose sum is σ = 1328175605664. Its totient is φ = 1169462790720.

The previous prime is 1248471143551. The next prime is 1248471143597. The reversal of 1248471143561 is 1653411748421.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1248471143561 is a prime.

It is a super-2 number, since 2×1248471143561² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1248471143501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 174023615 + ... + 174030788.

It is an arithmetic number, because the mean of its divisors is an integer number (166021950708).

Almost surely, 2^{1248471143561} is an apocalyptic number.

It is an amenable number.

1248471143561 is a deficient number, since it is larger than the sum of its proper divisors (79704462103).

1248471143561 is a wasteful number, since it uses less digits than its factorization.

1248471143561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 348054631.

The product of its digits is 645120, while the sum is 47.

The spelling of 1248471143561 in words is "one trillion, two hundred forty-eight billion, four hundred seventy-one million, one hundred forty-three thousand, five hundred sixty-one".