113851487561 has 8 divisors (see below), whose sum is σ = 134313275904. Its totient is φ = 94439021760.

The previous prime is 113851487539. The next prime is 113851487597. The reversal of 113851487561 is 165784158311.

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

It is a cyclic number.

It is not a de Polignac number, because 113851487561 - 2¹⁰ = 113851486537 is a prime.

It is a super-2 number, since 2×113851487561² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (113851487521) 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, 262330400 + ... + 262330833.

It is an arithmetic number, because the mean of its divisors is an integer number (16789159488).

Almost surely, 2^113851487561 is an apocalyptic number.

It is an amenable number.

113851487561 is a deficient number, since it is larger than the sum of its proper divisors (20461788343).

113851487561 is an equidigital number, since it uses as much as digits as its factorization.

113851487561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 524661271.

The product of its digits is 806400, while the sum is 50.

The spelling of 113851487561 in words is "one hundred thirteen billion, eight hundred fifty-one million, four hundred eighty-seven thousand, five hundred sixty-one".