2643254040042 has 48 divisors (see below), whose sum is σ = 7140218709312. Its totient is φ = 686559490560.

The previous prime is 2643254040017. The next prime is 2643254040043. The reversal of 2643254040042 is 2400404523462.

2643254040042 is a `hidden beast` number, since 2 + 6 + 4 + 32 + 540 + 40 + 0 + 42 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 2643254039979 and 2643254040006.

It is not an unprimeable number, because it can be changed into a prime (2643254040043) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 953553463 + ... + 953556234.

It is an arithmetic number, because the mean of its divisors is an integer number (148754556444).

Almost surely, 2^{2643254040042} is an apocalyptic number.

2643254040042 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2643254040042 is an abundant number, since it is smaller than the sum of its proper divisors (4496964669270).

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

2643254040042 is a wasteful number, since it uses less digits than its factorization.

2643254040042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1907109723 (or 1907109720 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 36.

The spelling of 2643254040042 in words is "two trillion, six hundred forty-three billion, two hundred fifty-four million, forty thousand, forty-two".