101438215139 has 2 divisors, whose sum is σ = 101438215140. Its totient is φ = 101438215138.

The previous prime is 101438215133. The next prime is 101438215157. The reversal of 101438215139 is 931512834101.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-101438215139 is a prime.

It is a super-2 number, since 2×101438215139² (a number of 23 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (101438215133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50719107569 + 50719107570.

It is an arithmetic number, because the mean of its divisors is an integer number (50719107570).

Almost surely, 2^101438215139 is an apocalyptic number.

101438215139 is a deficient number, since it is larger than the sum of its proper divisors (1).

101438215139 is an equidigital number, since it uses as much as digits as its factorization.

101438215139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25920, while the sum is 38.

The spelling of 101438215139 in words is "one hundred one billion, four hundred thirty-eight million, two hundred fifteen thousand, one hundred thirty-nine".