20278637722102 has 16 divisors (see below), whose sum is σ = 31291900067520. Its totient is φ = 9851153712448.

The previous prime is 20278637722087. The next prime is 20278637722111. The reversal of 20278637722102 is 20122773687202.

It is a super-2 number, since 2×20278637722102² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

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, 787323577 + ... + 787349332.

It is an arithmetic number, because the mean of its divisors is an integer number (1955743754220).

Almost surely, 2^{20278637722102} is an apocalyptic number.

20278637722102 is a deficient number, since it is larger than the sum of its proper divisors (11013262345418).

20278637722102 is a wasteful number, since it uses less digits than its factorization.

20278637722102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1574673095.

The product of its (nonzero) digits is 1580544, while the sum is 49.

The spelling of 20278637722102 in words is "twenty trillion, two hundred seventy-eight billion, six hundred thirty-seven million, seven hundred twenty-two thousand, one hundred two".