42340554651663 has 24 divisors (see below), whose sum is σ = 62483767070400. Its totient is φ = 27615871563264.

The previous prime is 42340554651649. The next prime is 42340554651683. The reversal of 42340554651663 is 36615645504324.

42340554651663 is a `hidden beast` number, since 4 + 2 + 3 + 40 + 5 + 546 + 51 + 6 + 6 + 3 = 666.

It is not a de Polignac number, because 42340554651663 - 2³³ = 42331964717071 is a prime.

It is a super-2 number, since 2×42340554651663² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42340554651683) 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, 18079198 + ... + 20286411.

It is an arithmetic number, because the mean of its divisors is an integer number (2603490294600).

Almost surely, 2^{42340554651663} is an apocalyptic number.

42340554651663 is a deficient number, since it is larger than the sum of its proper divisors (20143212418737).

42340554651663 is a wasteful number, since it uses less digits than its factorization.

42340554651663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38368271 (or 38368268 counting only the distinct ones).

The product of its (nonzero) digits is 31104000, while the sum is 54.

The spelling of 42340554651663 in words is "forty-two trillion, three hundred forty billion, five hundred fifty-four million, six hundred fifty-one thousand, six hundred sixty-three".