2078778702 has 64 divisors (see below), whose sum is σ = 5582191104. Its totient is φ = 498407040.

The previous prime is 2078778677. The next prime is 2078778703.

2078778702 is nontrivially palindromic in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2078778703) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 167053 + ... + 179064.

It is an arithmetic number, because the mean of its divisors is an integer number (87221736).

Almost surely, 2^2078778702 is an apocalyptic number.

2078778702 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2078778702 is an abundant number, since it is smaller than the sum of its proper divisors (3503412402).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2078778702 is a wasteful number, since it uses less digits than its factorization.

2078778702 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 346153.

The product of its (nonzero) digits is 614656, while the sum is 48.

The square root of 2078778702 is about 45593.6256728942. The cubic root of 2078778702 is about 1276.2509730455.

The spelling of 2078778702 in words is "two billion, seventy-eight million, seven hundred seventy-eight thousand, seven hundred two".