1639241079547 has 2 divisors, whose sum is σ = 1639241079548. Its totient is φ = 1639241079546.

The previous prime is 1639241079533. The next prime is 1639241079571. The reversal of 1639241079547 is 7459701429361.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1639241079547 - 2⁷ = 1639241079419 is a prime.

It is a super-2 number, since 2×1639241079547² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1639241079491 and 1639241079500.

It is not a weakly prime, because it can be changed into another prime (1639241079517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 819620539773 + 819620539774.

It is an arithmetic number, because the mean of its divisors is an integer number (819620539774).

Almost surely, 2^{1639241079547} is an apocalyptic number.

1639241079547 is a deficient number, since it is larger than the sum of its proper divisors (1).

1639241079547 is an equidigital number, since it uses as much as digits as its factorization.

1639241079547 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11430720, while the sum is 58.

The spelling of 1639241079547 in words is "one trillion, six hundred thirty-nine billion, two hundred forty-one million, seventy-nine thousand, five hundred forty-seven".