61147586306399 has 4 divisors (see below), whose sum is σ = 61153831601280. Its totient is φ = 61141341011520.

The previous prime is 61147586306383. The next prime is 61147586306407. The reversal of 61147586306399 is 99360368574116.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 61147586306399 - 2⁴ = 61147586306383 is a prime.

It is a super-2 number, since 2×61147586306399² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61147586309399) 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, 3122632754 + ... + 3122652335.

It is an arithmetic number, because the mean of its divisors is an integer number (15288457900320).

Almost surely, 2^{61147586306399} is an apocalyptic number.

61147586306399 is a deficient number, since it is larger than the sum of its proper divisors (6245294881).

61147586306399 is an equidigital number, since it uses as much as digits as its factorization.

61147586306399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6245294880.

The product of its (nonzero) digits is 176359680, while the sum is 68.

The spelling of 61147586306399 in words is "sixty-one trillion, one hundred forty-seven billion, five hundred eighty-six million, three hundred six thousand, three hundred ninety-nine".