38720451141081 has 20 divisors (see below), whose sum is σ = 57841832637732. Its totient is φ = 25813557754848.

The previous prime is 38720451141059. The next prime is 38720451141091. The reversal of 38720451141081 is 18014115402783.

38720451141081 is a `hidden beast` number, since 3 + 8 + 7 + 20 + 4 + 511 + 4 + 108 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 14124217568400 + 24596233572681 = 3758220^2 + 4959459^2 .

It is not a de Polignac number, because 38720451141081 - 2¹⁸ = 38720450878937 is a prime.

It is a super-2 number, since 2×38720451141081² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (38720451141091) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 44923131 + ... + 45776943.

Almost surely, 2^{38720451141081} is an apocalyptic number.

It is an amenable number.

38720451141081 is a deficient number, since it is larger than the sum of its proper divisors (19121381496651).

38720451141081 is an equidigital number, since it uses as much as digits as its factorization.

38720451141081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1413702 (or 1413693 counting only the distinct ones).

The product of its (nonzero) digits is 215040, while the sum is 45.

The spelling of 38720451141081 in words is "thirty-eight trillion, seven hundred twenty billion, four hundred fifty-one million, one hundred forty-one thousand, eighty-one".