64157002672127 has 4 divisors (see below), whose sum is σ = 64193106783456. Its totient is φ = 64120898560800.

The previous prime is 64157002672121. The next prime is 64157002672153. The reversal of 64157002672127 is 72127620075146.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 64157002672127 - 2¹⁶ = 64157002606591 is a prime.

It is a super-2 number, since 2×64157002672127² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64157002672121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18052052999 + ... + 18052056552.

It is an arithmetic number, because the mean of its divisors is an integer number (16048276695864).

Almost surely, 2^{64157002672127} is an apocalyptic number.

64157002672127 is a deficient number, since it is larger than the sum of its proper divisors (36104111329).

64157002672127 is a wasteful number, since it uses less digits than its factorization.

64157002672127 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36104111328.

The product of its (nonzero) digits is 1975680, while the sum is 50.

The spelling of 64157002672127 in words is "sixty-four trillion, one hundred fifty-seven billion, two million, six hundred seventy-two thousand, one hundred twenty-seven".