15601100005651 has 4 divisors (see below), whose sum is σ = 15601279541400. Its totient is φ = 15600920469904.

The previous prime is 15601100005639. The next prime is 15601100005657. The reversal of 15601100005651 is 15650000110651.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 15601100005651 - 2¹³ = 15601099997459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15601100005657) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 89637466 + ... + 89811343.

It is an arithmetic number, because the mean of its divisors is an integer number (3900319885350).

Almost surely, 2^{15601100005651} is an apocalyptic number.

15601100005651 is a deficient number, since it is larger than the sum of its proper divisors (179535749).

15601100005651 is an equidigital number, since it uses as much as digits as its factorization.

15601100005651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179535748.

The product of its (nonzero) digits is 4500, while the sum is 31.

The spelling of 15601100005651 in words is "fifteen trillion, six hundred one billion, one hundred million, five thousand, six hundred fifty-one".