20616562361615 has 8 divisors (see below), whose sum is σ = 26988954364368. Its totient is φ = 14993863535680.

The previous prime is 20616562361609. The next prime is 20616562361623. The reversal of 20616562361615 is 51616326561602.

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

It is not a de Polignac number, because 20616562361615 - 2¹⁶ = 20616562296079 is a prime.

It is a super-2 number, since 2×20616562361615² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 187423294142 + ... + 187423294251.

It is an arithmetic number, because the mean of its divisors is an integer number (3373619295546).

Almost surely, 2^{20616562361615} is an apocalyptic number.

20616562361615 is a deficient number, since it is larger than the sum of its proper divisors (6372392002753).

20616562361615 is a wasteful number, since it uses less digits than its factorization.

20616562361615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 374846588409.

The product of its (nonzero) digits is 2332800, while the sum is 50.

The spelling of 20616562361615 in words is "twenty trillion, six hundred sixteen billion, five hundred sixty-two million, three hundred sixty-one thousand, six hundred fifteen".