21799109550702 has 32 divisors (see below), whose sum is σ = 50359440248064. Its totient is φ = 6217214844800.

The previous prime is 21799109550697. The next prime is 21799109550731. The reversal of 21799109550702 is 20705590199712.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9714397074 + ... + 9714399317.

It is an arithmetic number, because the mean of its divisors is an integer number (1573732507752).

Almost surely, 2^{21799109550702} is an apocalyptic number.

21799109550702 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21799109550702 is an abundant number, since it is smaller than the sum of its proper divisors (28560330697362).

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

21799109550702 is a wasteful number, since it uses less digits than its factorization.

21799109550702 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19428796424.

The product of its (nonzero) digits is 3572100, while the sum is 57.

The spelling of 21799109550702 in words is "twenty-one trillion, seven hundred ninety-nine billion, one hundred nine million, five hundred fifty thousand, seven hundred two".