20737340930 has 16 divisors (see below), whose sum is σ = 37516695480. Its totient is φ = 8252829312.

The previous prime is 20737340903. The next prime is 20737340957. The reversal of 20737340930 is 3904373702.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20737340903) and next prime (20737340957).

It can be written as a sum of positive squares in 4 ways, for example, as 20053675321 + 683665609 = 141611^2 + 26147^2 .

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5261315 + ... + 5265254.

Almost surely, 2^20737340930 is an apocalyptic number.

20737340930 is a deficient number, since it is larger than the sum of its proper divisors (16779354550).

20737340930 is a wasteful number, since it uses less digits than its factorization.

20737340930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10526773.

The product of its (nonzero) digits is 95256, while the sum is 38.

The spelling of 20737340930 in words is "twenty billion, seven hundred thirty-seven million, three hundred forty thousand, nine hundred thirty".