740078219521 has 12 divisors (see below), whose sum is σ = 805348022220. Its totient is φ = 679555312640.

The previous prime is 740078219519. The next prime is 740078219533. The reversal of 740078219521 is 125912870047.

It can be written as a sum of positive squares in 6 ways, for example, as 4291691121 + 735786528400 = 65511^2 + 857780^2 .

It is not a de Polignac number, because 740078219521 - 2¹ = 740078219519 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (740078259521) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31217716 + ... + 31241413.

It is an arithmetic number, because the mean of its divisors is an integer number (67112335185).

Almost surely, 2^740078219521 is an apocalyptic number.

It is an amenable number.

740078219521 is a deficient number, since it is larger than the sum of its proper divisors (65269802699).

740078219521 is a wasteful number, since it uses less digits than its factorization.

740078219521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62459204 (or 62459187 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 46.

The spelling of 740078219521 in words is "seven hundred forty billion, seventy-eight million, two hundred nineteen thousand, five hundred twenty-one".