3440347040781 has 48 divisors (see below), whose sum is σ = 5728750904448. Its totient is φ = 1948828003200.

The previous prime is 3440347040749. The next prime is 3440347040803. The reversal of 3440347040781 is 1870407430443.

3440347040781 is a `hidden beast` number, since 3 + 440 + 34 + 70 + 40 + 78 + 1 = 666.

It is not a de Polignac number, because 3440347040781 - 2⁵ = 3440347040749 is a prime.

It is a super-2 number, since 2×3440347040781² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3440347040731) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7544575 + ... + 7987571.

It is an arithmetic number, because the mean of its divisors is an integer number (119348977176).

Almost surely, 2^{3440347040781} is an apocalyptic number.

It is an amenable number.

3440347040781 is a deficient number, since it is larger than the sum of its proper divisors (2288403863667).

3440347040781 is a wasteful number, since it uses less digits than its factorization.

3440347040781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 444082 (or 444079 counting only the distinct ones).

The product of its (nonzero) digits is 903168, while the sum is 45.

The spelling of 3440347040781 in words is "three trillion, four hundred forty billion, three hundred forty-seven million, forty thousand, seven hundred eighty-one".