770721788949 has 12 divisors (see below), whose sum is σ = 1195405223904. Its totient is φ = 440412450744.

The previous prime is 770721788897. The next prime is 770721788953. The reversal of 770721788949 is 949887127077.

It is not a de Polignac number, because 770721788949 - 2¹³ = 770721780757 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (770721788989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2621502537 + ... + 2621502830.

It is an arithmetic number, because the mean of its divisors is an integer number (99617101992).

Almost surely, 2^770721788949 is an apocalyptic number.

It is an amenable number.

770721788949 is a deficient number, since it is larger than the sum of its proper divisors (424683434955).

770721788949 is a wasteful number, since it uses less digits than its factorization.

770721788949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5243005384 (or 5243005377 counting only the distinct ones).

The product of its (nonzero) digits is 99574272, while the sum is 69.

The spelling of 770721788949 in words is "seven hundred seventy billion, seven hundred twenty-one million, seven hundred eighty-eight thousand, nine hundred forty-nine".