402251341044440 has 32 divisors (see below), whose sum is σ = 906410339873280. Its totient is φ = 160661456858112.

The previous prime is 402251341044431. The next prime is 402251341044457. The reversal of 402251341044440 is 44440143152204.

It is a super-2 number, since 2×402251341044440² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 402251341044394 and 402251341044403.

It is a congruent number.

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, 7471208984 + ... + 7471262823.

It is an arithmetic number, because the mean of its divisors is an integer number (28325323121040).

Almost surely, 2^{402251341044440} is an apocalyptic number.

402251341044440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

402251341044440 is an abundant number, since it is smaller than the sum of its proper divisors (504158998828840).

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

402251341044440 is a wasteful number, since it uses less digits than its factorization.

402251341044440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14942472491 (or 14942472487 counting only the distinct ones).

The product of its (nonzero) digits is 245760, while the sum is 38.

Adding to 402251341044440 its reverse (44440143152204), we get a palindrome (446691484196644).

The spelling of 402251341044440 in words is "four hundred two trillion, two hundred fifty-one billion, three hundred forty-one million, forty-four thousand, four hundred forty".