740880381681 has 72 divisors (see below), whose sum is σ = 1278145406720. Its totient is φ = 411663384000.

The previous prime is 740880381679. The next prime is 740880381763. The reversal of 740880381681 is 186183088047.

It is a happy number.

740880381681 is a `hidden beast` number, since 7 + 408 + 80 + 3 + 81 + 6 + 81 = 666.

It is not a de Polignac number, because 740880381681 - 2¹ = 740880381679 is a prime.

It is a super-2 number, since 2×740880381681² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (740880381611) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 63891 + ... + 1218951.

Almost surely, 2^740880381681 is an apocalyptic number.

It is an amenable number.

740880381681 is a deficient number, since it is larger than the sum of its proper divisors (537265025039).

740880381681 is a wasteful number, since it uses less digits than its factorization.

740880381681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1155139 (or 1155125 counting only the distinct ones).

The product of its (nonzero) digits is 2064384, while the sum is 54.

The spelling of 740880381681 in words is "seven hundred forty billion, eight hundred eighty million, three hundred eighty-one thousand, six hundred eighty-one".