440135000021420 has 36 divisors (see below), whose sum is σ = 1015947979393872. Its totient is φ = 160049090916000.

The previous prime is 440135000021401. The next prime is 440135000021441. The reversal of 440135000021420 is 24120000531044.

It is a self number, because there is not a number n which added to its sum of digits gives 440135000021420.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 90936981056 + ... + 90936985895.

Almost surely, 2^{440135000021420} is an apocalyptic number.

It is an amenable number.

440135000021420 is an abundant number, since it is smaller than the sum of its proper divisors (575812979372452).

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

440135000021420 is a wasteful number, since it uses less digits than its factorization.

440135000021420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181873966982 (or 181873966969 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 26.

Adding to 440135000021420 its reverse (24120000531044), we get a palindrome (464255000552464).

The spelling of 440135000021420 in words is "four hundred forty trillion, one hundred thirty-five billion, twenty-one thousand, four hundred twenty".