740081787109393 has 2 divisors, whose sum is σ = 740081787109394. Its totient is φ = 740081787109392.

The previous prime is 740081787109351. The next prime is 740081787109439. The reversal of 740081787109393 is 393901787180047.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 590790240355329 + 149291546754064 = 24306177^2 + 12218492^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-740081787109393 is a prime.

It is a super-2 number, since 2×740081787109393² (a number of 31 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (740081787106393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 370040893554696 + 370040893554697.

It is an arithmetic number, because the mean of its divisors is an integer number (370040893554697).

Almost surely, 2^{740081787109393} is an apocalyptic number.

It is an amenable number.

740081787109393 is a deficient number, since it is larger than the sum of its proper divisors (1).

740081787109393 is an equidigital number, since it uses as much as digits as its factorization.

740081787109393 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64012032, while the sum is 67.

The spelling of 740081787109393 in words is "seven hundred forty trillion, eighty-one billion, seven hundred eighty-seven million, one hundred nine thousand, three hundred ninety-three".