7421361645 has 32 divisors (see below), whose sum is σ = 12619514880. Its totient is φ = 3711349760.

The previous prime is 7421361641. The next prime is 7421361707. The reversal of 7421361645 is 5461631247.

It is a happy number.

It is not a de Polignac number, because 7421361645 - 2² = 7421361641 is a prime.

It is a super-3 number, since 3×7421361645³ (a number of 31 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7421361641) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14500 + ... + 122690.

It is an arithmetic number, because the mean of its divisors is an integer number (394359840).

Almost surely, 2^7421361645 is an apocalyptic number.

It is an amenable number.

7421361645 is a deficient number, since it is larger than the sum of its proper divisors (5198153235).

7421361645 is a wasteful number, since it uses less digits than its factorization.

7421361645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108485.

The product of its digits is 120960, while the sum is 39.

The square root of 7421361645 is about 86147.3252341592. The cubic root of 7421361645 is about 1950.5684641140.

The spelling of 7421361645 in words is "seven billion, four hundred twenty-one million, three hundred sixty-one thousand, six hundred forty-five".