2145522320436 has 48 divisors (see below), whose sum is σ = 5461637045760. Its totient is φ = 650121671520.

The previous prime is 2145522320411. The next prime is 2145522320437. The reversal of 2145522320436 is 6340232255412.

It is a super-3 number, since 3×2145522320436³ (a number of 38 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2145522320394 and 2145522320403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2145522320437) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1943175 + ... + 2840241.

It is an arithmetic number, because the mean of its divisors is an integer number (113784105120).

Almost surely, 2^{2145522320436} is an apocalyptic number.

It is an amenable number.

2145522320436 is an abundant number, since it is smaller than the sum of its proper divisors (3316114725324).

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

2145522320436 is a wasteful number, since it uses less digits than its factorization.

2145522320436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 915204 (or 915202 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 39.

Adding to 2145522320436 its reverse (6340232255412), we get a palindrome (8485754575848).

The spelling of 2145522320436 in words is "two trillion, one hundred forty-five billion, five hundred twenty-two million, three hundred twenty thousand, four hundred thirty-six".