38772213461 has 2 divisors, whose sum is σ = 38772213462. Its totient is φ = 38772213460.

The previous prime is 38772213449. The next prime is 38772213503. The reversal of 38772213461 is 16431227783.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26709364900 + 12062848561 = 163430^2 + 109831^2 .

It is a cyclic number.

It is not a de Polignac number, because 38772213461 - 2⁶ = 38772213397 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38772213421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19386106730 + 19386106731.

It is an arithmetic number, because the mean of its divisors is an integer number (19386106731).

Almost surely, 2^38772213461 is an apocalyptic number.

It is an amenable number.

38772213461 is a deficient number, since it is larger than the sum of its proper divisors (1).

38772213461 is an equidigital number, since it uses as much as digits as its factorization.

38772213461 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 338688, while the sum is 44.

The spelling of 38772213461 in words is "thirty-eight billion, seven hundred seventy-two million, two hundred thirteen thousand, four hundred sixty-one".