20226497165840 has 40 divisors (see below), whose sum is σ = 53744692470720. Its totient is φ = 6934799028096.

The previous prime is 20226497165783. The next prime is 20226497165891. The reversal of 20226497165840 is 4856179462202.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×20226497165840² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (56).

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, 18059371910 + ... + 18059373029.

It is an arithmetic number, because the mean of its divisors is an integer number (1343617311768).

Almost surely, 2^{20226497165840} is an apocalyptic number.

20226497165840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20226497165840 is an abundant number, since it is smaller than the sum of its proper divisors (33518195304880).

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

20226497165840 is a wasteful number, since it uses less digits than its factorization.

20226497165840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36118744959 (or 36118744953 counting only the distinct ones).

The product of its (nonzero) digits is 11612160, while the sum is 56.

The spelling of 20226497165840 in words is "twenty trillion, two hundred twenty-six billion, four hundred ninety-seven million, one hundred sixty-five thousand, eight hundred forty".