61402631897359 has 2 divisors, whose sum is σ = 61402631897360. Its totient is φ = 61402631897358.

The previous prime is 61402631897311. The next prime is 61402631897413. The reversal of 61402631897359 is 95379813620416.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61402631897359 - 2¹⁵ = 61402631864591 is a prime.

It is a super-2 number, since 2×61402631897359² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 61402631897359.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61402631897309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30701315948679 + 30701315948680.

It is an arithmetic number, because the mean of its divisors is an integer number (30701315948680).

It is a 2-persistent number, because it is pandigital, and so is 2⋅61402631897359 = 122805263794718, but 3⋅61402631897359 = 184207895692077 is not.

Almost surely, 2^{61402631897359} is an apocalyptic number.

61402631897359 is a deficient number, since it is larger than the sum of its proper divisors (1).

61402631897359 is an equidigital number, since it uses as much as digits as its factorization.

61402631897359 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 58786560, while the sum is 64.

The spelling of 61402631897359 in words is "sixty-one trillion, four hundred two billion, six hundred thirty-one million, eight hundred ninety-seven thousand, three hundred fifty-nine".