64143481535 has 16 divisors (see below), whose sum is σ = 88021180416. Its totient is φ = 43957613088.

The previous prime is 64143481489. The next prime is 64143481553. The reversal of 64143481535 is 53518434146.

It is a cyclic number.

It is not a de Polignac number, because 64143481535 - 2¹² = 64143477439 is a prime.

It is a super-2 number, since 2×64143481535² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 492809 + ... + 609218.

It is an arithmetic number, because the mean of its divisors is an integer number (5501323776).

Almost surely, 2^64143481535 is an apocalyptic number.

64143481535 is a deficient number, since it is larger than the sum of its proper divisors (23877698881).

64143481535 is a wasteful number, since it uses less digits than its factorization.

64143481535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1103702.

The product of its digits is 691200, while the sum is 44.

The spelling of 64143481535 in words is "sixty-four billion, one hundred forty-three million, four hundred eighty-one thousand, five hundred thirty-five".