21494303496 has 48 divisors (see below), whose sum is σ = 58915125360. Its totient is φ = 7078443360.

The previous prime is 21494303461. The next prime is 21494303497. The reversal of 21494303496 is 69430349412.

21494303496 is a `hidden beast` number, since 214 + 94 + 3 + 0 + 349 + 6 = 666.

It is an alternating number because its digits alternate between even and odd.

It is not an unprimeable number, because it can be changed into a prime (21494303497) 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, 1792410 + ... + 1804361.

It is an arithmetic number, because the mean of its divisors is an integer number (1227398445).

Almost surely, 2^21494303496 is an apocalyptic number.

It is an amenable number.

21494303496 is an abundant number, since it is smaller than the sum of its proper divisors (37420821864).

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

21494303496 is a wasteful number, since it uses less digits than its factorization.

21494303496 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3596866 (or 3596859 counting only the distinct ones).

The product of its (nonzero) digits is 559872, while the sum is 45.

It can be divided in two parts, 2149 and 4303496, that added together give a triangular number (4305645 = T₂₉₃₄).

The spelling of 21494303496 in words is "twenty-one billion, four hundred ninety-four million, three hundred three thousand, four hundred ninety-six".