40351705687 has 2 divisors, whose sum is σ = 40351705688. Its totient is φ = 40351705686.

The previous prime is 40351705633. The next prime is 40351705697. The reversal of 40351705687 is 78650715304.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40351705687 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40351705697) 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, 20175852843 + 20175852844.

It is an arithmetic number, because the mean of its divisors is an integer number (20175852844).

Almost surely, 2^40351705687 is an apocalyptic number.

40351705687 is a deficient number, since it is larger than the sum of its proper divisors (1).

40351705687 is an equidigital number, since it uses as much as digits as its factorization.

40351705687 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 705600, while the sum is 46.

The spelling of 40351705687 in words is "forty billion, three hundred fifty-one million, seven hundred five thousand, six hundred eighty-seven".