20699339311450 has 24 divisors (see below), whose sum is σ = 39742731480960. Its totient is φ = 8012647474800.

The previous prime is 20699339311423. The next prime is 20699339311457. The reversal of 20699339311450 is 5411393399602.

It is a super-2 number, since 2×20699339311450² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20699339311391 and 20699339311400.

It is not an unprimeable number, because it can be changed into a prime (20699339311457) 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, 6677204680 + ... + 6677207779.

It is an arithmetic number, because the mean of its divisors is an integer number (1655947145040).

Almost surely, 2^{20699339311450} is an apocalyptic number.

20699339311450 is a deficient number, since it is larger than the sum of its proper divisors (19043392169510).

20699339311450 is a wasteful number, since it uses less digits than its factorization.

20699339311450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13354412502 (or 13354412497 counting only the distinct ones).

The product of its (nonzero) digits is 4723920, while the sum is 55.

The spelling of 20699339311450 in words is "twenty trillion, six hundred ninety-nine billion, three hundred thirty-nine million, three hundred eleven thousand, four hundred fifty".