21496290049490 has 32 divisors (see below), whose sum is σ = 40974332091264. Its totient is φ = 8091746691840.

The previous prime is 21496290049459. The next prime is 21496290049499. The reversal of 21496290049490 is 9494009269412.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (21496290049499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6194444 + ... + 9020183.

It is an arithmetic number, because the mean of its divisors is an integer number (1280447877852).

Almost surely, 2^{21496290049490} is an apocalyptic number.

21496290049490 is a deficient number, since it is larger than the sum of its proper divisors (19478042041774).

21496290049490 is a wasteful number, since it uses less digits than its factorization.

21496290049490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15222962.

The product of its (nonzero) digits is 10077696, while the sum is 59.

The spelling of 21496290049490 in words is "twenty-one trillion, four hundred ninety-six billion, two hundred ninety million, forty-nine thousand, four hundred ninety".