75764620139 has 4 divisors (see below), whose sum is σ = 81592667856. Its totient is φ = 69936572424.

The previous prime is 75764620121. The next prime is 75764620159. The reversal of 75764620139 is 93102646757.

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 75764620139 - 2²⁴ = 75747842923 is a prime.

It is a super-4 number, since 4×75764620139⁴ (a number of 45 digits) contains 4444 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (75764620109) 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, 2914023839 + ... + 2914023864.

It is an arithmetic number, because the mean of its divisors is an integer number (20398166964).

Almost surely, 2^75764620139 is an apocalyptic number.

75764620139 is a deficient number, since it is larger than the sum of its proper divisors (5828047717).

75764620139 is a wasteful number, since it uses less digits than its factorization.

75764620139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5828047716.

The product of its (nonzero) digits is 1905120, while the sum is 50.

The spelling of 75764620139 in words is "seventy-five billion, seven hundred sixty-four million, six hundred twenty thousand, one hundred thirty-nine".