9460781137987 has 2 divisors, whose sum is σ = 9460781137988. Its totient is φ = 9460781137986.

The previous prime is 9460781137931. The next prime is 9460781138057. The reversal of 9460781137987 is 7897311870649.

It is an a-pointer prime, because the next prime (9460781138057) can be obtained adding 9460781137987 to its sum of digits (70).

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9460781137987 is a prime.

It is not a weakly prime, because it can be changed into another prime (9460781137187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4730390568993 + 4730390568994.

It is an arithmetic number, because the mean of its divisors is an integer number (4730390568994).

Almost surely, 2^{9460781137987} is an apocalyptic number.

9460781137987 is a deficient number, since it is larger than the sum of its proper divisors (1).

9460781137987 is an equidigital number, since it uses as much as digits as its factorization.

9460781137987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 128024064, while the sum is 70.

The spelling of 9460781137987 in words is "nine trillion, four hundred sixty billion, seven hundred eighty-one million, one hundred thirty-seven thousand, nine hundred eighty-seven".