20749240702 has 16 divisors (see below), whose sum is σ = 31688040240. Its totient is φ = 10187802432.

The previous prime is 20749240679. The next prime is 20749240703. The reversal of 20749240702 is 20704294702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20749240703) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 276868 + ... + 343735.

It is an arithmetic number, because the mean of its divisors is an integer number (1980502515).

Almost surely, 2^20749240702 is an apocalyptic number.

20749240702 is a deficient number, since it is larger than the sum of its proper divisors (10938799538).

20749240702 is a wasteful number, since it uses less digits than its factorization.

20749240702 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 620907.

The product of its (nonzero) digits is 56448, while the sum is 37.

The spelling of 20749240702 in words is "twenty billion, seven hundred forty-nine million, two hundred forty thousand, seven hundred two".