64541242501616 has 40 divisors (see below), whose sum is σ = 125198804918400. Its totient is φ = 32231881402560.

The previous prime is 64541242501601. The next prime is 64541242501667. The reversal of 64541242501616 is 61610524214546.

It is a super-2 number, since 2×64541242501616² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 132961271 + ... + 133445801.

It is an arithmetic number, because the mean of its divisors is an integer number (3129970122960).

Almost surely, 2^{64541242501616} is an apocalyptic number.

It is an amenable number.

64541242501616 is a deficient number, since it is larger than the sum of its proper divisors (60657562416784).

64541242501616 is a wasteful number, since it uses less digits than its factorization.

64541242501616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 494517 (or 494511 counting only the distinct ones).

The product of its (nonzero) digits is 1382400, while the sum is 47.

The spelling of 64541242501616 in words is "sixty-four trillion, five hundred forty-one billion, two hundred forty-two million, five hundred one thousand, six hundred sixteen".