65040699187 has 4 divisors (see below), whose sum is σ = 65041463416. Its totient is φ = 65039934960.

The previous prime is 65040699169. The next prime is 65040699209. The reversal of 65040699187 is 78199604056.

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 65040699187 - 2²³ = 65032310579 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65040699137) 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, 235773 + ... + 430894.

It is an arithmetic number, because the mean of its divisors is an integer number (16260365854).

Almost surely, 2^65040699187 is an apocalyptic number.

65040699187 is a deficient number, since it is larger than the sum of its proper divisors (764229).

65040699187 is an equidigital number, since it uses as much as digits as its factorization.

65040699187 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 764228.

The product of its (nonzero) digits is 3265920, while the sum is 55.

The spelling of 65040699187 in words is "sixty-five billion, forty million, six hundred ninety-nine thousand, one hundred eighty-seven".