64147605416 has 8 divisors (see below), whose sum is σ = 120276760170. Its totient is φ = 32073802704.

The previous prime is 64147605413. The next prime is 64147605419. The reversal of 64147605416 is 61450674146.

It is an interprime number because it is at equal distance from previous prime (64147605413) and next prime (64147605419).

It can be written as a sum of positive squares in only one way, i.e., 57958636516 + 6188968900 = 240746^2 + 78670^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×64147605416² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (64147605413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4009225331 + ... + 4009225346.

Almost surely, 2^64147605416 is an apocalyptic number.

It is an amenable number.

64147605416 is a deficient number, since it is larger than the sum of its proper divisors (56129154754).

64147605416 is a wasteful number, since it uses less digits than its factorization.

64147605416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8018450683 (or 8018450679 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 44.

The spelling of 64147605416 in words is "sixty-four billion, one hundred forty-seven million, six hundred five thousand, four hundred sixteen".