64153031539697 has 4 divisors (see below), whose sum is σ = 64419226691556. Its totient is φ = 63886836387840.

The previous prime is 64153031539673. The next prime is 64153031539769. The reversal of 64153031539697 is 79693513035146.

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

It can be written as a sum of positive squares in 2 ways, for example, as 59673137575921 + 4479893963776 = 7724839^2 + 2116576^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64153031539697 is a prime.

It is a super-2 number, since 2×64153031539697² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64153031539627) 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, 133097575568 + ... + 133097576049.

It is an arithmetic number, because the mean of its divisors is an integer number (16104806672889).

Almost surely, 2^{64153031539697} is an apocalyptic number.

It is an amenable number.

64153031539697 is a deficient number, since it is larger than the sum of its proper divisors (266195151859).

64153031539697 is a wasteful number, since it uses less digits than its factorization.

64153031539697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266195151858.

The product of its (nonzero) digits is 55112400, while the sum is 62.

The spelling of 64153031539697 in words is "sixty-four trillion, one hundred fifty-three billion, thirty-one million, five hundred thirty-nine thousand, six hundred ninety-seven".