20493988939402 has 16 divisors (see below), whose sum is σ = 33535761782112. Its totient is φ = 9315409651920.

The previous prime is 20493988939387. The next prime is 20493988939439.

20493988939402 is nontrivially palindromic in base 10.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3614893 + ... + 7352239.

It is an arithmetic number, because the mean of its divisors is an integer number (2095985111382).

Almost surely, 2^{20493988939402} is an apocalyptic number.

20493988939402 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20493988939402 is a deficient number, since it is larger than the sum of its proper divisors (13041772842710).

20493988939402 is a wasteful number, since it uses less digits than its factorization.

20493988939402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3986613.

The product of its (nonzero) digits is 241864704, while the sum is 70.

The spelling of 20493988939402 in words is "twenty trillion, four hundred ninety-three billion, nine hundred eighty-eight million, nine hundred thirty-nine thousand, four hundred two".