61879527393 has 4 divisors (see below), whose sum is σ = 82506036528. Its totient is φ = 41253018260.

The previous prime is 61879527379. The next prime is 61879527467. The reversal of 61879527393 is 39372597816.

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 not a de Polignac number, because 61879527393 - 2⁴ = 61879527377 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61879527323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10313254563 + ... + 10313254568.

It is an arithmetic number, because the mean of its divisors is an integer number (20626509132).

Almost surely, 2^61879527393 is an apocalyptic number.

It is an amenable number.

61879527393 is a deficient number, since it is larger than the sum of its proper divisors (20626509135).

61879527393 is a wasteful number, since it uses less digits than its factorization.

61879527393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20626509134.

The product of its digits is 17146080, while the sum is 60.

The spelling of 61879527393 in words is "sixty-one billion, eight hundred seventy-nine million, five hundred twenty-seven thousand, three hundred ninety-three".