740778229640 has 16 divisors (see below), whose sum is σ = 1666751016780. Its totient is φ = 296311291840.

The previous prime is 740778229603. The next prime is 740778229649. The reversal of 740778229640 is 46922877047.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 712393393156 + 28384836484 = 844034^2 + 168478^2 .

It is a super-5 number, since 5×740778229640⁵ (a number of 61 digits) contains 55555 as substring.

It is not an unprimeable number, because it can be changed into a prime (740778229649) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9259727831 + ... + 9259727910.

Almost surely, 2^740778229640 is an apocalyptic number.

It is an amenable number.

740778229640 is an abundant number, since it is smaller than the sum of its proper divisors (925972787140).

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

740778229640 is a wasteful number, since it uses less digits than its factorization.

740778229640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18519455752 (or 18519455748 counting only the distinct ones).

The product of its (nonzero) digits is 9483264, while the sum is 56.

The spelling of 740778229640 in words is "seven hundred forty billion, seven hundred seventy-eight million, two hundred twenty-nine thousand, six hundred forty".