4491508785151 has 2 divisors, whose sum is σ = 4491508785152. Its totient is φ = 4491508785150.

The previous prime is 4491508785121. The next prime is 4491508785241. The reversal of 4491508785151 is 1515878051944.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4491508785151 - 2¹⁷ = 4491508654079 is a prime.

It is a super-2 number, since 2×4491508785151² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4491508785121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2245754392575 + 2245754392576.

It is an arithmetic number, because the mean of its divisors is an integer number (2245754392576).

Almost surely, 2^{4491508785151} is an apocalyptic number.

4491508785151 is a deficient number, since it is larger than the sum of its proper divisors (1).

4491508785151 is an equidigital number, since it uses as much as digits as its factorization.

4491508785151 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8064000, while the sum is 58.

The spelling of 4491508785151 in words is "four trillion, four hundred ninety-one billion, five hundred eight million, seven hundred eighty-five thousand, one hundred fifty-one".