75611601979 has 2 divisors, whose sum is σ = 75611601980. Its totient is φ = 75611601978.

The previous prime is 75611601977. The next prime is 75611602037. The reversal of 75611601979 is 97910611657.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 75611601979 - 2¹ = 75611601977 is a prime.

It is a super-2 number, since 2×75611601979² (a number of 23 digits) contains 22 as substring.

Together with 75611601977, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (75611601971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37805800989 + 37805800990.

It is an arithmetic number, because the mean of its divisors is an integer number (37805800990).

Almost surely, 2^75611601979 is an apocalyptic number.

75611601979 is a deficient number, since it is larger than the sum of its proper divisors (1).

75611601979 is an equidigital number, since it uses as much as digits as its factorization.

75611601979 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 714420, while the sum is 52.

The spelling of 75611601979 in words is "seventy-five billion, six hundred eleven million, six hundred one thousand, nine hundred seventy-nine".