2147650561 has 16 divisors (see below), whose sum is σ = 2529434880. Its totient is φ = 1785150720.

The previous prime is 2147650559. The next prime is 2147650573. The reversal of 2147650561 is 1650567412.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 2147650561 - 2¹ = 2147650559 is a prime.

It is a super-2 number, since 2×2147650561² = 9224805864327229442, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a self number, because there is not a number n which added to its sum of digits gives 2147650561.

It is not an unprimeable number, because it can be changed into a prime (2147650961) 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, 25525 + ... + 70333.

It is an arithmetic number, because the mean of its divisors is an integer number (158089680).

Almost surely, 2^2147650561 is an apocalyptic number.

It is an amenable number.

2147650561 is a deficient number, since it is larger than the sum of its proper divisors (381784319).

2147650561 is a wasteful number, since it uses less digits than its factorization.

2147650561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45024.

The product of its (nonzero) digits is 50400, while the sum is 37.

The square root of 2147650561 is about 46342.7509002217. The cubic root of 2147650561 is about 1290.1925800665.

The spelling of 2147650561 in words is "two billion, one hundred forty-seven million, six hundred fifty thousand, five hundred sixty-one".