740221666452 has 30 divisors (see below), whose sum is σ = 1935085653578. Its totient is φ = 246740555376.

The previous prime is 740221666427. The next prime is 740221666487. The reversal of 740221666452 is 254666122047.

It can be written as a sum of positive squares in only one way, i.e., 638922054276 + 101299612176 = 799326^2 + 318276^2 .

It is a junction number, because it is equal to n+sod(n) for n = 740221666398 and 740221666407.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 1142317063 + ... + 1142317710.

Almost surely, 2^740221666452 is an apocalyptic number.

It is an amenable number.

740221666452 is an abundant number, since it is smaller than the sum of its proper divisors (1194863987126).

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

740221666452 is a wasteful number, since it uses less digits than its factorization.

740221666452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2284634789 (or 2284634778 counting only the distinct ones).

The product of its (nonzero) digits is 967680, while the sum is 45.

Adding to 740221666452 its reverse (254666122047), we get a palindrome (994887788499).

The spelling of 740221666452 in words is "seven hundred forty billion, two hundred twenty-one million, six hundred sixty-six thousand, four hundred fifty-two".