139571776438541 has 2 divisors, whose sum is σ = 139571776438542. Its totient is φ = 139571776438540.

The previous prime is 139571776438537. The next prime is 139571776438561. The reversal of 139571776438541 is 145834677175931.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 72140646409225 + 67431130029316 = 8493565^2 + 8211646^2 .

It is a cyclic number.

It is not a de Polignac number, because 139571776438541 - 2² = 139571776438537 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (139571776438561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69785888219270 + 69785888219271.

It is an arithmetic number, because the mean of its divisors is an integer number (69785888219271).

Almost surely, 2^{139571776438541} is an apocalyptic number.

It is an amenable number.

139571776438541 is a deficient number, since it is larger than the sum of its proper divisors (1).

139571776438541 is an equidigital number, since it uses as much as digits as its factorization.

139571776438541 is an evil number, because the sum of its binary digits is even.

The product of its digits is 533433600, while the sum is 71.

The spelling of 139571776438541 in words is "one hundred thirty-nine trillion, five hundred seventy-one billion, seven hundred seventy-six million, four hundred thirty-eight thousand, five hundred forty-one".