61501368407 has 2 divisors, whose sum is σ = 61501368408. Its totient is φ = 61501368406.

The previous prime is 61501368371. The next prime is 61501368463. The reversal of 61501368407 is 70486310516.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61501368407 - 2¹² = 61501364311 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61501367407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30750684203 + 30750684204.

It is an arithmetic number, because the mean of its divisors is an integer number (30750684204).

Almost surely, 2^61501368407 is an apocalyptic number.

61501368407 is a deficient number, since it is larger than the sum of its proper divisors (1).

61501368407 is an equidigital number, since it uses as much as digits as its factorization.

61501368407 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 120960, while the sum is 41.

The spelling of 61501368407 in words is "sixty-one billion, five hundred one million, three hundred sixty-eight thousand, four hundred seven".