3400542749840 has 20 divisors (see below), whose sum is σ = 7906261893564. Its totient is φ = 1360217099904.

The previous prime is 3400542749839. The next prime is 3400542749873. The reversal of 3400542749840 is 489472450043.

It can be written as a sum of positive squares in 2 ways, for example, as 497103963136 + 2903438786704 = 705056^2 + 1703948^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21253392107 + ... + 21253392266.

Almost surely, 2^{3400542749840} is an apocalyptic number.

It is an amenable number.

3400542749840 is an abundant number, since it is smaller than the sum of its proper divisors (4505719143724).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3400542749840 is a wasteful number, since it uses less digits than its factorization.

3400542749840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42506784386 (or 42506784380 counting only the distinct ones).

The product of its (nonzero) digits is 3870720, while the sum is 50.

The spelling of 3400542749840 in words is "three trillion, four hundred billion, five hundred forty-two million, seven hundred forty-nine thousand, eight hundred forty".