77019375309 has 16 divisors (see below), whose sum is σ = 107643649344. Its totient is φ = 48928924800.

The previous prime is 77019375299. The next prime is 77019375337. The reversal of 77019375309 is 90357391077.

It is not a de Polignac number, because 77019375309 - 2⁹ = 77019374797 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77019375809) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7275802 + ... + 7286379.

It is an arithmetic number, because the mean of its divisors is an integer number (6727728084).

Almost surely, 2^77019375309 is an apocalyptic number.

It is an amenable number.

77019375309 is a deficient number, since it is larger than the sum of its proper divisors (30624274035).

77019375309 is a wasteful number, since it uses less digits than its factorization.

77019375309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14562268.

The product of its (nonzero) digits is 1250235, while the sum is 51.

The spelling of 77019375309 in words is "seventy-seven billion, nineteen million, three hundred seventy-five thousand, three hundred nine".