77050073669 has 4 divisors (see below), whose sum is σ = 80400076896. Its totient is φ = 73700070444.

The previous prime is 77050073603. The next prime is 77050073671. The reversal of 77050073669 is 96637005077.

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, and also an emirpimes, since its reverse is a distinct semiprime: 96637005077 = 47 ⋅2056106491.

It is a cyclic number.

It is not a de Polignac number, because 77050073669 - 2¹² = 77050069573 is a prime.

It is a super-2 number, since 2×77050073669² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77050073699) 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, 1675001579 + ... + 1675001624.

It is an arithmetic number, because the mean of its divisors is an integer number (20100019224).

Almost surely, 2^77050073669 is an apocalyptic number.

It is an amenable number.

77050073669 is a deficient number, since it is larger than the sum of its proper divisors (3350003227).

77050073669 is a wasteful number, since it uses less digits than its factorization.

77050073669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3350003226.

The product of its (nonzero) digits is 1666980, while the sum is 50.

The spelling of 77050073669 in words is "seventy-seven billion, fifty million, seventy-three thousand, six hundred sixty-nine".