220641264537 has 16 divisors (see below), whose sum is σ = 301477292928. Its totient is φ = 143452411520.

The previous prime is 220641264469. The next prime is 220641264539. The reversal of 220641264537 is 735462146022.

It is a cyclic number.

It is not a de Polignac number, because 220641264537 - 2³¹ = 218493780889 is a prime.

It is not an unprimeable number, because it can be changed into a prime (220641264539) 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, 9258 + ... + 664355.

It is an arithmetic number, because the mean of its divisors is an integer number (18842330808).

Almost surely, 2^220641264537 is an apocalyptic number.

It is an amenable number.

220641264537 is a deficient number, since it is larger than the sum of its proper divisors (80836028391).

220641264537 is a wasteful number, since it uses less digits than its factorization.

220641264537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 676320.

The product of its (nonzero) digits is 483840, while the sum is 42.

The spelling of 220641264537 in words is "two hundred twenty billion, six hundred forty-one million, two hundred sixty-four thousand, five hundred thirty-seven".