161103356387 has 2 divisors, whose sum is σ = 161103356388. Its totient is φ = 161103356386.

The previous prime is 161103356383. The next prime is 161103356431. The reversal of 161103356387 is 783653301161.

It is an a-pointer prime, because the next prime (161103356431) can be obtained adding 161103356387 to its sum of digits (44).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 161103356387 - 2² = 161103356383 is a prime.

It is not a weakly prime, because it can be changed into another prime (161103356383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80551678193 + 80551678194.

It is an arithmetic number, because the mean of its divisors is an integer number (80551678194).

Almost surely, 2^161103356387 is an apocalyptic number.

161103356387 is a deficient number, since it is larger than the sum of its proper divisors (1).

161103356387 is an equidigital number, since it uses as much as digits as its factorization.

161103356387 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 272160, while the sum is 44.

The spelling of 161103356387 in words is "one hundred sixty-one billion, one hundred three million, three hundred fifty-six thousand, three hundred eighty-seven".