7513422399 has 72 divisors (see below), whose sum is σ = 13275400320. Its totient is φ = 4076956800.

The previous prime is 7513422383. The next prime is 7513422409. The reversal of 7513422399 is 9932243157.

7513422399 is a `hidden beast` number, since 7 + 513 + 42 + 2 + 3 + 99 = 666.

It is a Cunningham number, because it is equal to 86680²-1.

It is not a de Polignac number, because 7513422399 - 2⁴ = 7513422383 is a prime.

It is a super-2 number, since 2×7513422399² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7513422299) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 775314 + ... + 784944.

It is an arithmetic number, because the mean of its divisors is an integer number (184380560).

Almost surely, 2^7513422399 is an apocalyptic number.

7513422399 is a deficient number, since it is larger than the sum of its proper divisors (5761977921).

7513422399 is a wasteful number, since it uses less digits than its factorization.

7513422399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9741 (or 9731 counting only the distinct ones).

The product of its digits is 408240, while the sum is 45.

The square root of 7513422399 is about 86679.9999942317. Note that the first 5 decimals coincide. The cubic root of 7513422399 is about 1958.6008339116.

The spelling of 7513422399 in words is "seven billion, five hundred thirteen million, four hundred twenty-two thousand, three hundred ninety-nine".