1616537226197 has 4 divisors (see below), whose sum is σ = 1616551965600. Its totient is φ = 1616522486796.

The previous prime is 1616537226181. The next prime is 1616537226223. The reversal of 1616537226197 is 7916227356161.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1616537226197 - 2⁴ = 1616537226181 is a prime.

It is a super-2 number, since 2×1616537226197² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1616537226697) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7203947 + ... + 7424952.

It is an arithmetic number, because the mean of its divisors is an integer number (404137991400).

Almost surely, 2^{1616537226197} is an apocalyptic number.

It is an amenable number.

1616537226197 is a deficient number, since it is larger than the sum of its proper divisors (14739403).

1616537226197 is a wasteful number, since it uses less digits than its factorization.

1616537226197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14739402.

The product of its digits is 5715360, while the sum is 56.

The spelling of 1616537226197 in words is "one trillion, six hundred sixteen billion, five hundred thirty-seven million, two hundred twenty-six thousand, one hundred ninety-seven".