77372070479 has 6 divisors (see below), whose sum is σ = 85045333800. Its totient is φ = 70338245780.

The previous prime is 77372070469. The next prime is 77372070487. The reversal of 77372070479 is 97407027377.

It is not a de Polignac number, because 77372070479 - 2¹⁶ = 77372004943 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 77372070479.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77372070439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 319719179 + ... + 319719420.

It is an arithmetic number, because the mean of its divisors is an integer number (14174222300).

Almost surely, 2^77372070479 is an apocalyptic number.

77372070479 is a deficient number, since it is larger than the sum of its proper divisors (7673263321).

77372070479 is a wasteful number, since it uses less digits than its factorization.

77372070479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 639438621 (or 639438610 counting only the distinct ones).

The product of its (nonzero) digits is 3630312, while the sum is 53.

The spelling of 77372070479 in words is "seventy-seven billion, three hundred seventy-two million, seventy thousand, four hundred seventy-nine".