65612067577 has 4 divisors (see below), whose sum is σ = 74985220096. Its totient is φ = 56238915060.

The previous prime is 65612067533. The next prime is 65612067583. The reversal of 65612067577 is 77576021656.

It is a happy number.

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 65612067577 - 2¹⁹ = 65611543289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65612062577) 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, 4686576249 + ... + 4686576262.

It is an arithmetic number, because the mean of its divisors is an integer number (18746305024).

Almost surely, 2^65612067577 is an apocalyptic number.

It is an amenable number.

65612067577 is a deficient number, since it is larger than the sum of its proper divisors (9373152519).

65612067577 is an equidigital number, since it uses as much as digits as its factorization.

65612067577 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9373152518.

The product of its (nonzero) digits is 3704400, while the sum is 52.

The spelling of 65612067577 in words is "sixty-five billion, six hundred twelve million, sixty-seven thousand, five hundred seventy-seven".