64146525763557 has 16 divisors (see below), whose sum is σ = 86336379057600. Its totient is φ = 42360956988672.

The previous prime is 64146525763553. The next prime is 64146525763591. The reversal of 64146525763557 is 75536752564146.

It is not a de Polignac number, because 64146525763557 - 2² = 64146525763553 is a prime.

It is a super-2 number, since 2×64146525763557² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64146525763553) 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, 55110558 + ... + 56262479.

It is an arithmetic number, because the mean of its divisors is an integer number (5396023691100).

Almost surely, 2^{64146525763557} is an apocalyptic number.

It is an amenable number.

64146525763557 is a deficient number, since it is larger than the sum of its proper divisors (22189853294043).

64146525763557 is a wasteful number, since it uses less digits than its factorization.

64146525763557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111374852.

The product of its digits is 635040000, while the sum is 66.

The spelling of 64146525763557 in words is "sixty-four trillion, one hundred forty-six billion, five hundred twenty-five million, seven hundred sixty-three thousand, five hundred fifty-seven".