4012728372540 has 72 divisors (see below), whose sum is σ = 12701157644448. Its totient is φ = 1023536511360.

The previous prime is 4012728372539. The next prime is 4012728372559. The reversal of 4012728372540 is 452738272104.

4012728372540 is a `hidden beast` number, since 4 + 0 + 1 + 2 + 72 + 8 + 37 + 2 + 540 = 666.

It is a super-2 number, since 2×4012728372540² (a number of 26 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 484624891 + ... + 484633170.

It is an arithmetic number, because the mean of its divisors is an integer number (176404967284).

Almost surely, 2^{4012728372540} is an apocalyptic number.

It is an amenable number.

4012728372540 is an abundant number, since it is smaller than the sum of its proper divisors (8688429271908).

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

4012728372540 is a wasteful number, since it uses less digits than its factorization.

4012728372540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 969258099 (or 969258094 counting only the distinct ones).

The product of its (nonzero) digits is 752640, while the sum is 45.

The spelling of 4012728372540 in words is "four trillion, twelve billion, seven hundred twenty-eight million, three hundred seventy-two thousand, five hundred forty".