77707769245 has 16 divisors (see below), whose sum is σ = 95559976512. Its totient is φ = 60626931840.

The previous prime is 77707769219. The next prime is 77707769257. The reversal of 77707769245 is 54296770777.

It is not a de Polignac number, because 77707769245 - 2⁵ = 77707769213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 479374 + ... + 620656.

It is an arithmetic number, because the mean of its divisors is an integer number (5972498532).

Almost surely, 2^77707769245 is an apocalyptic number.

It is an amenable number.

77707769245 is a deficient number, since it is larger than the sum of its proper divisors (17852207267).

77707769245 is a wasteful number, since it uses less digits than its factorization.

77707769245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144012.

The product of its (nonzero) digits is 36303120, while the sum is 61.

The spelling of 77707769245 in words is "seventy-seven billion, seven hundred seven million, seven hundred sixty-nine thousand, two hundred forty-five".