7287157214381 has 4 divisors (see below), whose sum is σ = 7949626052064. Its totient is φ = 6624688376700.

The previous prime is 7287157214357. The next prime is 7287157214383. The reversal of 7287157214381 is 1834127517827.

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 a cyclic number.

It is not a de Polignac number, because 7287157214381 - 2²⁶ = 7287090105517 is a prime.

It is a super-2 number, since 2×7287157214381² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7287157214383) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 331234418825 + ... + 331234418846.

It is an arithmetic number, because the mean of its divisors is an integer number (1987406513016).

Almost surely, 2^{7287157214381} is an apocalyptic number.

It is an amenable number.

7287157214381 is a deficient number, since it is larger than the sum of its proper divisors (662468837683).

7287157214381 is a wasteful number, since it uses less digits than its factorization.

7287157214381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 662468837682.

The product of its digits is 5268480, while the sum is 56.

The spelling of 7287157214381 in words is "seven trillion, two hundred eighty-seven billion, one hundred fifty-seven million, two hundred fourteen thousand, three hundred eighty-one".