240537278916 has 135 divisors (see below), whose sum is σ = 691452626557. Its totient is φ = 72860657760.

The previous prime is 240537278911. The next prime is 240537278939. The reversal of 240537278916 is 619872735042.

It is a happy number.

The square root of 240537278916 is 490446.

It is a perfect power (a square), and thus also a powerful number.

240537278916 is a `hidden beast` number, since 2 + 4 + 0 + 537 + 27 + 89 + 1 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 120749300100 + 119787978816 = 347490^2 + 346104^2 .

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (240537278911) by changing a digit.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 97107070 + ... + 97109546.

It is a 1-persistent number, because it is pandigital, but 2⋅240537278916 = 481074557832 is not.

Almost surely, 2^240537278916 is an apocalyptic number.

240537278916 is the 490446-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 240537278916

240537278916 is an abundant number, since it is smaller than the sum of its proper divisors (450915347641).

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

240537278916 is an equidigital number, since it uses as much as digits as its factorization.

240537278916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4992 (or 2493 counting only the distinct ones).

The product of its (nonzero) digits is 5080320, while the sum is 54.

The spelling of 240537278916 in words is "two hundred forty billion, five hundred thirty-seven million, two hundred seventy-eight thousand, nine hundred sixteen".