20516546615426 has 16 divisors (see below), whose sum is σ = 31526864748288. Its totient is φ = 10007614548000.

The previous prime is 20516546615387. The next prime is 20516546615473. The reversal of 20516546615426 is 62451664561502.

It is a super-2 number, since 2×20516546615426² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3901850 + ... + 7500501.

It is an arithmetic number, because the mean of its divisors is an integer number (1970429046768).

Almost surely, 2^{20516546615426} is an apocalyptic number.

20516546615426 is a deficient number, since it is larger than the sum of its proper divisors (11010318132862).

20516546615426 is a wasteful number, since it uses less digits than its factorization.

20516546615426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11424337.

The product of its (nonzero) digits is 10368000, while the sum is 53.

The spelling of 20516546615426 in words is "twenty trillion, five hundred sixteen billion, five hundred forty-six million, six hundred fifteen thousand, four hundred twenty-six".