20279580617148 has 48 divisors (see below), whose sum is σ = 49277702132736. Its totient is φ = 6483908148480.

The previous prime is 20279580617137. The next prime is 20279580617189. The reversal of 20279580617148 is 84171608597202.

It is a super-2 number, since 2×20279580617148² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20279580617091 and 20279580617100.

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, 241174786 + ... + 241258857.

It is an arithmetic number, because the mean of its divisors is an integer number (1026618794432).

Almost surely, 2^{20279580617148} is an apocalyptic number.

It is an amenable number.

20279580617148 is an abundant number, since it is smaller than the sum of its proper divisors (28998121515588).

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

20279580617148 is a wasteful number, since it uses less digits than its factorization.

20279580617148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 482433794 (or 482433792 counting only the distinct ones).

The product of its (nonzero) digits is 13547520, while the sum is 60.

The spelling of 20279580617148 in words is "twenty trillion, two hundred seventy-nine billion, five hundred eighty million, six hundred seventeen thousand, one hundred forty-eight".