16432601025501 has 12 divisors (see below), whose sum is σ = 24061129660828. Its totient is φ = 10804997934144.

The previous prime is 16432601025497. The next prime is 16432601025521. The reversal of 16432601025501 is 10552010623461.

16432601025501 is a `hidden beast` number, since 1 + 6 + 4 + 32 + 60 + 10 + 2 + 550 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 4404432558276 + 12028168467225 = 2098674^2 + 3468165^2 .

It is not a de Polignac number, because 16432601025501 - 2² = 16432601025497 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16432601025521) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12505783990 + ... + 12505785303.

Almost surely, 2^{16432601025501} is an apocalyptic number.

It is an amenable number.

16432601025501 is a deficient number, since it is larger than the sum of its proper divisors (7628528635327).

16432601025501 is a wasteful number, since it uses less digits than its factorization.

16432601025501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25011569372 (or 25011569369 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

Adding to 16432601025501 its reverse (10552010623461), we get a palindrome (26984611648962).

The spelling of 16432601025501 in words is "sixteen trillion, four hundred thirty-two billion, six hundred one million, twenty-five thousand, five hundred one".