38720450878951 has 2 divisors, whose sum is σ = 38720450878952. Its totient is φ = 38720450878950.

The previous prime is 38720450878937. The next prime is 38720450878973. The reversal of 38720450878951 is 15987805402783.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 38720450878951 - 2⁴⁵ = 3536078790119 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38720450878931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19360225439475 + 19360225439476.

It is an arithmetic number, because the mean of its divisors is an integer number (19360225439476).

Almost surely, 2^{38720450878951} is an apocalyptic number.

38720450878951 is a deficient number, since it is larger than the sum of its proper divisors (1).

38720450878951 is an equidigital number, since it uses as much as digits as its factorization.

38720450878951 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 135475200, while the sum is 67.

The spelling of 38720450878951 in words is "thirty-eight trillion, seven hundred twenty billion, four hundred fifty million, eight hundred seventy-eight thousand, nine hundred fifty-one".