1406681340157 has 2 divisors, whose sum is σ = 1406681340158. Its totient is φ = 1406681340156.

The previous prime is 1406681340137. The next prime is 1406681340173. The reversal of 1406681340157 is 7510431866041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1311641082361 + 95040257796 = 1145269^2 + 308286^2 .

It is a cyclic number.

It is not a de Polignac number, because 1406681340157 - 2¹¹ = 1406681338109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1406681340137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 703340670078 + 703340670079.

It is an arithmetic number, because the mean of its divisors is an integer number (703340670079).

Almost surely, 2^{1406681340157} is an apocalyptic number.

It is an amenable number.

1406681340157 is a deficient number, since it is larger than the sum of its proper divisors (1).

1406681340157 is an equidigital number, since it uses as much as digits as its factorization.

1406681340157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 483840, while the sum is 46.

The spelling of 1406681340157 in words is "one trillion, four hundred six billion, six hundred eighty-one million, three hundred forty thousand, one hundred fifty-seven".