1616537226451 has 16 divisors (see below), whose sum is σ = 1929097916928. Its totient is φ = 1324464609600.

The previous prime is 1616537226439. The next prime is 1616537226503. The reversal of 1616537226451 is 1546227356161.

It is a cyclic number.

It is not a de Polignac number, because 1616537226451 - 2²⁵ = 1616503672019 is a prime.

It is a super-2 number, since 2×1616537226451² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1616537226395 and 1616537226404.

It is not an unprimeable number, because it can be changed into a prime (1616537226851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3151365 + ... + 3628246.

It is an arithmetic number, because the mean of its divisors is an integer number (120568619808).

Almost surely, 2^{1616537226451} is an apocalyptic number.

1616537226451 is a deficient number, since it is larger than the sum of its proper divisors (312560690477).

1616537226451 is a wasteful number, since it uses less digits than its factorization.

1616537226451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6781122.

The product of its digits is 1814400, while the sum is 49.

The spelling of 1616537226451 in words is "one trillion, six hundred sixteen billion, five hundred thirty-seven million, two hundred twenty-six thousand, four hundred fifty-one".