3540638734668 has 36 divisors (see below), whose sum is σ = 10228511900880. Its totient is φ = 1011611066976.

The previous prime is 3540638734651. The next prime is 3540638734687. The reversal of 3540638734668 is 8664378360453.

3540638734668 is a `hidden beast` number, since 3 + 5 + 40 + 63 + 8 + 73 + 466 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×3540638734668² (a number of 26 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7025076603 + ... + 7025077106.

It is an arithmetic number, because the mean of its divisors is an integer number (284125330580).

Almost surely, 2^{3540638734668} is an apocalyptic number.

It is an amenable number.

3540638734668 is an abundant number, since it is smaller than the sum of its proper divisors (6687873166212).

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

3540638734668 is a wasteful number, since it uses less digits than its factorization.

3540638734668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14050153726 (or 14050153721 counting only the distinct ones).

The product of its (nonzero) digits is 209018880, while the sum is 63.

The spelling of 3540638734668 in words is "three trillion, five hundred forty billion, six hundred thirty-eight million, seven hundred thirty-four thousand, six hundred sixty-eight".