38532991951 has 2 divisors, whose sum is σ = 38532991952. Its totient is φ = 38532991950.

The previous prime is 38532991949. The next prime is 38532991957. The reversal of 38532991951 is 15919923583.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 38532991951 - 2¹ = 38532991949 is a prime.

Together with 38532991949, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 38532991892 and 38532991901.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38532991957) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19266495975 + 19266495976.

It is an arithmetic number, because the mean of its divisors is an integer number (19266495976).

Almost surely, 2^38532991951 is an apocalyptic number.

38532991951 is a deficient number, since it is larger than the sum of its proper divisors (1).

38532991951 is an equidigital number, since it uses as much as digits as its factorization.

38532991951 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2624400, while the sum is 55.

The spelling of 38532991951 in words is "thirty-eight billion, five hundred thirty-two million, nine hundred ninety-one thousand, nine hundred fifty-one".