2069777649 has 16 divisors (see below), whose sum is σ = 2777192000. Its totient is φ = 1371133440.

The previous prime is 2069777617. The next prime is 2069777653. The reversal of 2069777649 is 9467779602.

It is not a de Polignac number, because 2069777649 - 2⁵ = 2069777617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2069770649) 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 15 ways as a sum of consecutive naturals, for example, 357909 + ... + 363645.

It is an arithmetic number, because the mean of its divisors is an integer number (173574500).

Almost surely, 2^2069777649 is an apocalyptic number.

It is an amenable number.

2069777649 is a deficient number, since it is larger than the sum of its proper divisors (707414351).

2069777649 is a wasteful number, since it uses less digits than its factorization.

2069777649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6480.

The product of its (nonzero) digits is 8001504, while the sum is 57.

The square root of 2069777649 is about 45494.8090335590. The cubic root of 2069777649 is about 1274.4062644240.

It can be divided in two parts, 20697 and 77649, that added together give a triangular number (98346 = T₄₄₃).

The spelling of 2069777649 in words is "two billion, sixty-nine million, seven hundred seventy-seven thousand, six hundred forty-nine".