601500061381 has 2 divisors, whose sum is σ = 601500061382. Its totient is φ = 601500061380.

The previous prime is 601500061361. The next prime is 601500061391. The reversal of 601500061381 is 183160005106.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 592176420900 + 9323640481 = 769530^2 + 96559^2 .

It is a cyclic number.

It is not a de Polignac number, because 601500061381 - 2²⁷ = 601365843653 is a prime.

It is a super-2 number, since 2×601500061381² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (601500061321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 300750030690 + 300750030691.

It is an arithmetic number, because the mean of its divisors is an integer number (300750030691).

Almost surely, 2^601500061381 is an apocalyptic number.

It is an amenable number.

601500061381 is a deficient number, since it is larger than the sum of its proper divisors (1).

601500061381 is an equidigital number, since it uses as much as digits as its factorization.

601500061381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4320, while the sum is 31.

Adding to 601500061381 its reverse (183160005106), we get a palindrome (784660066487).

The spelling of 601500061381 in words is "six hundred one billion, five hundred million, sixty-one thousand, three hundred eighty-one".