2156102203460 has 96 divisors (see below), whose sum is σ = 5052639876480. Its totient is φ = 768048998400.

The previous prime is 2156102203439. The next prime is 2156102203471. The reversal of 2156102203460 is 643022016512.

It is a super-4 number, since 4×2156102203460⁴ (a number of 50 digits) contains 4444 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5100395 + ... + 5506925.

It is an arithmetic number, because the mean of its divisors is an integer number (52631665380).

Almost surely, 2^{2156102203460} is an apocalyptic number.

2156102203460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2156102203460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2526319938240).

2156102203460 is an abundant number, since it is smaller than the sum of its proper divisors (2896537673020).

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

2156102203460 is a wasteful number, since it uses less digits than its factorization.

2156102203460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 407397 (or 407395 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 32.

Adding to 2156102203460 its reverse (643022016512), we get a palindrome (2799124219972).

The spelling of 2156102203460 in words is "two trillion, one hundred fifty-six billion, one hundred two million, two hundred three thousand, four hundred sixty".