16903503357061 has 2 divisors, whose sum is σ = 16903503357062. Its totient is φ = 16903503357060.

The previous prime is 16903503357031. The next prime is 16903503357067. The reversal of 16903503357061 is 16075330530961.

16903503357061 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12683071368900 + 4220431988161 = 3561330^2 + 2054369^2 .

It is a cyclic number.

It is not a de Polignac number, because 16903503357061 - 2²³ = 16903494968453 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16903503356996 and 16903503357014.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16903503357067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8451751678530 + 8451751678531.

It is an arithmetic number, because the mean of its divisors is an integer number (8451751678531).

Almost surely, 2^{16903503357061} is an apocalyptic number.

It is an amenable number.

16903503357061 is a deficient number, since it is larger than the sum of its proper divisors (1).

16903503357061 is an equidigital number, since it uses as much as digits as its factorization.

16903503357061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1530900, while the sum is 49.

The spelling of 16903503357061 in words is "sixteen trillion, nine hundred three billion, five hundred three million, three hundred fifty-seven thousand, sixty-one".