21650310213400 has 48 divisors (see below), whose sum is σ = 54913059546840. Its totient is φ = 7872840076800.

The previous prime is 21650310213383. The next prime is 21650310213401. The reversal of 21650310213400 is 431201305612.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21650310213401) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4920522849 + ... + 4920527248.

Almost surely, 2^{21650310213400} is an apocalyptic number.

21650310213400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21650310213400 is an abundant number, since it is smaller than the sum of its proper divisors (33262749333440).

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

21650310213400 is a wasteful number, since it uses less digits than its factorization.

21650310213400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9841050124 (or 9841050115 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

The spelling of 21650310213400 in words is "twenty-one trillion, six hundred fifty billion, three hundred ten million, two hundred thirteen thousand, four hundred".