1135720423647 has 12 divisors (see below), whose sum is σ = 1640800783960. Its totient is φ = 757001228688.

The previous prime is 1135720423639. The next prime is 1135720423709. The reversal of 1135720423647 is 7463240275311.

It is a happy number.

1135720423647 is a `hidden beast` number, since 1 + 1 + 3 + 572 + 0 + 4 + 2 + 36 + 47 = 666.

It is not a de Polignac number, because 1135720423647 - 2³ = 1135720423639 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1135720423247) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12093997 + ... + 12187542.

Almost surely, 2^{1135720423647} is an apocalyptic number.

1135720423647 is a deficient number, since it is larger than the sum of its proper divisors (505080360313).

1135720423647 is a wasteful number, since it uses less digits than its factorization.

1135720423647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24286742 (or 24286739 counting only the distinct ones).

The product of its (nonzero) digits is 846720, while the sum is 45.

Adding to 1135720423647 its reverse (7463240275311), we get a palindrome (8598960698958).

The spelling of 1135720423647 in words is "one trillion, one hundred thirty-five billion, seven hundred twenty million, four hundred twenty-three thousand, six hundred forty-seven".