20274993668 has 24 divisors (see below), whose sum is σ = 36313909632. Its totient is φ = 9900516704.

The previous prime is 20274993601. The next prime is 20274993691. The reversal of 20274993668 is 86639947202.

It is a super-2 number, since 2×20274993668² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27671 + ... + 203262.

It is an arithmetic number, because the mean of its divisors is an integer number (1513079568).

Almost surely, 2^20274993668 is an apocalyptic number.

It is an amenable number.

20274993668 is a deficient number, since it is larger than the sum of its proper divisors (16038915964).

20274993668 is a wasteful number, since it uses less digits than its factorization.

20274993668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231451 (or 231449 counting only the distinct ones).

The product of its (nonzero) digits is 7838208, while the sum is 56.

The spelling of 20274993668 in words is "twenty billion, two hundred seventy-four million, nine hundred ninety-three thousand, six hundred sixty-eight".