2154315540100 has 18 divisors (see below), whose sum is σ = 4674864722234. Its totient is φ = 861726216000.

The previous prime is 2154315540019. The next prime is 2154315540101. The reversal of 2154315540100 is 10455134512.

It can be written as a sum of positive squares in 3 ways, for example, as 509145039936 + 1645170500164 = 713544^2 + 1282642^2 .

It is not an unprimeable number, because it can be changed into a prime (2154315540101) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10771577601 + ... + 10771577800.

Almost surely, 2^{2154315540100} is an apocalyptic number.

2154315540100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2154315540100 is an abundant number, since it is smaller than the sum of its proper divisors (2520549182134).

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

2154315540100 is a wasteful number, since it uses less digits than its factorization.

2154315540100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21543155415 (or 21543155408 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 31.

The spelling of 2154315540100 in words is "two trillion, one hundred fifty-four billion, three hundred fifteen million, five hundred forty thousand, one hundred".