1616061273451 has 8 divisors (see below), whose sum is σ = 1668208870400. Its totient is φ = 1563914713320.

The previous prime is 1616061273349. The next prime is 1616061273517. The reversal of 1616061273451 is 1543721606161.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1616061273451 - 2¹¹ = 1616061271403 is a prime.

It is a super-2 number, since 2×1616061273451² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1616061273398 and 1616061273407.

It is not an unprimeable number, because it can be changed into a prime (1616061273551) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4041160 + ... + 4423018.

It is an arithmetic number, because the mean of its divisors is an integer number (208526108800).

Almost surely, 2^{1616061273451} is an apocalyptic number.

1616061273451 is a deficient number, since it is larger than the sum of its proper divisors (52147596949).

1616061273451 is a wasteful number, since it uses less digits than its factorization.

1616061273451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 518409.

The product of its (nonzero) digits is 181440, while the sum is 43.

The spelling of 1616061273451 in words is "one trillion, six hundred sixteen billion, sixty-one million, two hundred seventy-three thousand, four hundred fifty-one".