64151211663 has 72 divisors (see below), whose sum is σ = 120417242400. Its totient is φ = 32176045440.

The previous prime is 64151211661. The next prime is 64151211671. The reversal of 64151211663 is 36611215146.

64151211663 is a `hidden beast` number, since 641 + 5 + 1 + 2 + 1 + 1 + 6 + 6 + 3 = 666.

It is not a de Polignac number, because 64151211663 - 2¹ = 64151211661 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64151211661) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 75973 + ... + 366161.

It is an arithmetic number, because the mean of its divisors is an integer number (1672461700).

Almost surely, 2^64151211663 is an apocalyptic number.

64151211663 is a gapful number since it is divisible by the number (63) formed by its first and last digit.

64151211663 is a deficient number, since it is larger than the sum of its proper divisors (56266030737).

64151211663 is a wasteful number, since it uses less digits than its factorization.

64151211663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290253 (or 290239 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The spelling of 64151211663 in words is "sixty-four billion, one hundred fifty-one million, two hundred eleven thousand, six hundred sixty-three".