7616521374 has 128 divisors (see below), whose sum is σ = 20479979520. Its totient is φ = 1828396800.

The previous prime is 7616521351. The next prime is 7616521417. The reversal of 7616521374 is 4731256167.

It is a happy number.

It is a super-2 number, since 2×7616521374² (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 349317 + ... + 370479.

It is an arithmetic number, because the mean of its divisors is an integer number (159999840).

Almost surely, 2^7616521374 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7616521374, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10239989760).

7616521374 is an abundant number, since it is smaller than the sum of its proper divisors (12863458146).

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

7616521374 is a wasteful number, since it uses less digits than its factorization.

7616521374 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21246.

The product of its digits is 211680, while the sum is 42.

The square root of 7616521374 is about 87272.6840082279. The cubic root of 7616521374 is about 1967.5187890184.

The spelling of 7616521374 in words is "seven billion, six hundred sixteen million, five hundred twenty-one thousand, three hundred seventy-four".