61158241083857 has 4 divisors (see below), whose sum is σ = 61175367450096. Its totient is φ = 61141114717620.

The previous prime is 61158241083847. The next prime is 61158241083871. The reversal of 61158241083857 is 75838014285116.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61158241083857 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 61158241083796 and 61158241083805.

It is not an unprimeable number, because it can be changed into a prime (61158241083847) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8563177763 + ... + 8563184904.

It is an arithmetic number, because the mean of its divisors is an integer number (15293841862524).

Almost surely, 2^{61158241083857} is an apocalyptic number.

It is an amenable number.

61158241083857 is a deficient number, since it is larger than the sum of its proper divisors (17126366239).

61158241083857 is a wasteful number, since it uses less digits than its factorization.

61158241083857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17126366238.

The product of its (nonzero) digits is 12902400, while the sum is 59.

The spelling of 61158241083857 in words is "sixty-one trillion, one hundred fifty-eight billion, two hundred forty-one million, eighty-three thousand, eight hundred fifty-seven".