20454544545402 has 16 divisors (see below), whose sum is σ = 44628097190112. Its totient is φ = 6198346831920.

The previous prime is 20454544545371. The next prime is 20454544545431.

20454544545402 is nontrivially palindromic in base 10.

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, 154958670733 + ... + 154958670864.

It is an arithmetic number, because the mean of its divisors is an integer number (2789256074382).

Almost surely, 2^{20454544545402} is an apocalyptic number.

20454544545402 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20454544545402 is an abundant number, since it is smaller than the sum of its proper divisors (24173552644710).

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

20454544545402 is a wasteful number, since it uses less digits than its factorization.

20454544545402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 309917341613.

The product of its (nonzero) digits is 10240000, while the sum is 48.

The spelling of 20454544545402 in words is "twenty trillion, four hundred fifty-four billion, five hundred forty-four million, five hundred forty-five thousand, four hundred two".