38472919078889 has 2 divisors, whose sum is σ = 38472919078890. Its totient is φ = 38472919078888.

The previous prime is 38472919078849. The next prime is 38472919079003. The reversal of 38472919078889 is 98887091927483.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37940770713664 + 532148365225 = 6159608^2 + 729485^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38472919078889 is a prime.

It is a super-3 number, since 3×38472919078889³ (a number of 42 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (38472919078849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19236459539444 + 19236459539445.

It is an arithmetic number, because the mean of its divisors is an integer number (19236459539445).

Almost surely, 2^{38472919078889} is an apocalyptic number.

It is an amenable number.

38472919078889 is a deficient number, since it is larger than the sum of its proper divisors (1).

38472919078889 is an equidigital number, since it uses as much as digits as its factorization.

38472919078889 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3511517184, while the sum is 83.

The spelling of 38472919078889 in words is "thirty-eight trillion, four hundred seventy-two billion, nine hundred nineteen million, seventy-eight thousand, eight hundred eighty-nine".