7472399681 has 4 divisors (see below), whose sum is σ = 7713444864. Its totient is φ = 7231354500.

The previous prime is 7472399611. The next prime is 7472399707. The reversal of 7472399681 is 1869932747.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 7472399681 - 2¹⁴ = 7472383297 is a prime.

It is a super-2 number, since 2×7472399681² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7472399611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 120522545 + ... + 120522606.

It is an arithmetic number, because the mean of its divisors is an integer number (1928361216).

Almost surely, 2^7472399681 is an apocalyptic number.

It is an amenable number.

7472399681 is a deficient number, since it is larger than the sum of its proper divisors (241045183).

7472399681 is a wasteful number, since it uses less digits than its factorization.

7472399681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241045182.

The product of its digits is 4572288, while the sum is 56.

The square root of 7472399681 is about 86443.0429878541. The cubic root of 7472399681 is about 1955.0297225353.

The spelling of 7472399681 in words is "seven billion, four hundred seventy-two million, three hundred ninety-nine thousand, six hundred eighty-one".