16542173097 has 12 divisors (see below), whose sum is σ = 24665032704. Its totient is φ = 10672369560.

The previous prime is 16542173077. The next prime is 16542173101. The reversal of 16542173097 is 79037124561.

16542173097 is a `hidden beast` number, since 1 + 6 + 542 + 17 + 3 + 0 + 97 = 666.

It is not a de Polignac number, because 16542173097 - 2⁶ = 16542173033 is a prime.

It is a super-2 number, since 2×16542173097² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (16542173077) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 29645193 + ... + 29645750.

It is an arithmetic number, because the mean of its divisors is an integer number (2055419392).

Almost surely, 2^16542173097 is an apocalyptic number.

It is an amenable number.

16542173097 is a deficient number, since it is larger than the sum of its proper divisors (8122859607).

16542173097 is a wasteful number, since it uses less digits than its factorization.

16542173097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59290980 (or 59290977 counting only the distinct ones).

The product of its (nonzero) digits is 317520, while the sum is 45.

The spelling of 16542173097 in words is "sixteen billion, five hundred forty-two million, one hundred seventy-three thousand, ninety-seven".