61071524431 has 2 divisors, whose sum is σ = 61071524432. Its totient is φ = 61071524430.

The previous prime is 61071524413. The next prime is 61071524443. The reversal of 61071524431 is 13442517016.

Together with previous prime (61071524413) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61071524431 - 2⁵ = 61071524399 is a prime.

It is a super-2 number, since 2×61071524431² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61071524411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30535762215 + 30535762216.

It is an arithmetic number, because the mean of its divisors is an integer number (30535762216).

Almost surely, 2^61071524431 is an apocalyptic number.

61071524431 is a deficient number, since it is larger than the sum of its proper divisors (1).

61071524431 is an equidigital number, since it uses as much as digits as its factorization.

61071524431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20160, while the sum is 34.

The spelling of 61071524431 in words is "sixty-one billion, seventy-one million, five hundred twenty-four thousand, four hundred thirty-one".