38720009427 has 32 divisors (see below), whose sum is σ = 59432451840. Its totient is φ = 22176000000.

The previous prime is 38720009423. The next prime is 38720009467. The reversal of 38720009427 is 72490002783.

It is not a de Polignac number, because 38720009427 - 2² = 38720009423 is a prime.

It is not an unprimeable number, because it can be changed into a prime (38720009423) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 174427 + ... + 328427.

It is an arithmetic number, because the mean of its divisors is an integer number (1857264120).

Almost surely, 2^38720009427 is an apocalyptic number.

38720009427 is a deficient number, since it is larger than the sum of its proper divisors (20712442413).

38720009427 is a wasteful number, since it uses less digits than its factorization.

38720009427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154435.

The product of its (nonzero) digits is 169344, while the sum is 42.

The spelling of 38720009427 in words is "thirty-eight billion, seven hundred twenty million, nine thousand, four hundred twenty-seven".