2151064044667 has 2 divisors, whose sum is σ = 2151064044668. Its totient is φ = 2151064044666.

The previous prime is 2151064044637. The next prime is 2151064044719. The reversal of 2151064044667 is 7664404601512.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2151064044667 - 2³⁹ = 1601308230779 is a prime.

It is a super-2 number, since 2×2151064044667² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2151064044637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1075532022333 + 1075532022334.

It is an arithmetic number, because the mean of its divisors is an integer number (1075532022334).

Almost surely, 2^{2151064044667} is an apocalyptic number.

2151064044667 is a deficient number, since it is larger than the sum of its proper divisors (1).

2151064044667 is an equidigital number, since it uses as much as digits as its factorization.

2151064044667 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 967680, while the sum is 46.

The spelling of 2151064044667 in words is "two trillion, one hundred fifty-one billion, sixty-four million, forty-four thousand, six hundred sixty-seven".