7215251634643 has 16 divisors (see below), whose sum is σ = 7842485984256. Its totient is φ = 6598501247520.

The previous prime is 7215251634623. The next prime is 7215251634659. The reversal of 7215251634643 is 3464361525127.

It is not a de Polignac number, because 7215251634643 - 2¹⁷ = 7215251503571 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7215251634623) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2456221 + ... + 4523662.

It is an arithmetic number, because the mean of its divisors is an integer number (490155374016).

Almost surely, 2^{7215251634643} is an apocalyptic number.

7215251634643 is a deficient number, since it is larger than the sum of its proper divisors (627234349613).

7215251634643 is a wasteful number, since it uses less digits than its factorization.

7215251634643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6980634.

The product of its digits is 3628800, while the sum is 49.

The spelling of 7215251634643 in words is "seven trillion, two hundred fifteen billion, two hundred fifty-one million, six hundred thirty-four thousand, six hundred forty-three".