2445777821712 has 20 divisors (see below), whose sum is σ = 6318259372880. Its totient is φ = 815259273888.

The previous prime is 2445777821621. The next prime is 2445777821713. The reversal of 2445777821712 is 2171287775442.

It is a happy number.

It is a super-2 number, since 2×2445777821712² (a number of 26 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2445777821713) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25476852262 + ... + 25476852357.

It is an arithmetic number, because the mean of its divisors is an integer number (315912968644).

Almost surely, 2^{2445777821712} is an apocalyptic number.

It is an amenable number.

2445777821712 is an abundant number, since it is smaller than the sum of its proper divisors (3872481551168).

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

2445777821712 is a wasteful number, since it uses less digits than its factorization.

2445777821712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50953704630 (or 50953704624 counting only the distinct ones).

The product of its digits is 12293120, while the sum is 57.

The spelling of 2445777821712 in words is "two trillion, four hundred forty-five billion, seven hundred seventy-seven million, eight hundred twenty-one thousand, seven hundred twelve".