18202056435454 has 16 divisors (see below), whose sum is σ = 27313364332800. Its totient is φ = 9097601903320.

The previous prime is 18202056435383. The next prime is 18202056435487. The reversal of 18202056435454 is 45453465020281.

It is a super-2 number, since 2×18202056435454² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 18202056435398 and 18202056435407.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 220399989 + ... + 220482559.

It is an arithmetic number, because the mean of its divisors is an integer number (1707085270800).

Almost surely, 2^{18202056435454} is an apocalyptic number.

18202056435454 is a deficient number, since it is larger than the sum of its proper divisors (9111307897346).

18202056435454 is a wasteful number, since it uses less digits than its factorization.

18202056435454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122735.

The product of its (nonzero) digits is 4608000, while the sum is 49.

The spelling of 18202056435454 in words is "eighteen trillion, two hundred two billion, fifty-six million, four hundred thirty-five thousand, four hundred fifty-four".