64785001541 has 8 divisors (see below), whose sum is σ = 69807486840. Its totient is φ = 59768091072.

The previous prime is 64785001517. The next prime is 64785001543. The reversal of 64785001541 is 14510058746.

It can be written as a sum of positive squares in 4 ways, for example, as 34319044516 + 30465957025 = 185254^2 + 174545^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 64785001541 - 2²² = 64780807237 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64785001543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1369550 + ... + 1416063.

It is an arithmetic number, because the mean of its divisors is an integer number (8725935855).

Almost surely, 2^64785001541 is an apocalyptic number.

It is an amenable number.

64785001541 is a deficient number, since it is larger than the sum of its proper divisors (5022485299).

64785001541 is a wasteful number, since it uses less digits than its factorization.

64785001541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2787415.

The product of its (nonzero) digits is 134400, while the sum is 41.

The spelling of 64785001541 in words is "sixty-four billion, seven hundred eighty-five million, one thousand, five hundred forty-one".