20651602411 has 16 divisors (see below), whose sum is σ = 23741330688. Its totient is φ = 17780092000.

The previous prime is 20651602333. The next prime is 20651602427. The reversal of 20651602411 is 11420615602.

It is not a de Polignac number, because 20651602411 - 2¹⁵ = 20651569643 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20651602411.

It is not an unprimeable number, because it can be changed into a prime (20651602451) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 378541 + ... + 429646.

It is an arithmetic number, because the mean of its divisors is an integer number (1483833168).

Almost surely, 2^20651602411 is an apocalyptic number.

20651602411 is a deficient number, since it is larger than the sum of its proper divisors (3089728277).

20651602411 is a wasteful number, since it uses less digits than its factorization.

20651602411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 808322.

The product of its (nonzero) digits is 2880, while the sum is 28.

The spelling of 20651602411 in words is "twenty billion, six hundred fifty-one million, six hundred two thousand, four hundred eleven".