61475614867 has 4 divisors (see below), whose sum is σ = 61517925760. Its totient is φ = 61433303976.

The previous prime is 61475614847. The next prime is 61475614873. The reversal of 61475614867 is 76841657416.

It is a happy number.

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 61475614867 - 2²³ = 61467226259 is a prime.

It is a super-2 number, since 2×61475614867² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61475614847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21153267 + ... + 21156172.

It is an arithmetic number, because the mean of its divisors is an integer number (15379481440).

Almost surely, 2^61475614867 is an apocalyptic number.

61475614867 is a deficient number, since it is larger than the sum of its proper divisors (42310893).

61475614867 is a wasteful number, since it uses less digits than its factorization.

61475614867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42310892.

The product of its digits is 6773760, while the sum is 55.

The spelling of 61475614867 in words is "sixty-one billion, four hundred seventy-five million, six hundred fourteen thousand, eight hundred sixty-seven".