7243651642557 has 16 divisors (see below), whose sum is σ = 10548960901632. Its totient is φ = 4384783433520.

The previous prime is 7243651642537. The next prime is 7243651642597. The reversal of 7243651642557 is 7552461563427.

It is not a de Polignac number, because 7243651642557 - 2²² = 7243647448253 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 7243651642497 and 7243651642506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7243651642537) 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, 132684073 + ... + 132738654.

It is an arithmetic number, because the mean of its divisors is an integer number (659310056352).

Almost surely, 2^{7243651642557} is an apocalyptic number.

It is an amenable number.

7243651642557 is a deficient number, since it is larger than the sum of its proper divisors (3305309259075).

7243651642557 is a wasteful number, since it uses less digits than its factorization.

7243651642557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265423568.

The product of its digits is 42336000, while the sum is 57.

The spelling of 7243651642557 in words is "seven trillion, two hundred forty-three billion, six hundred fifty-one million, six hundred forty-two thousand, five hundred fifty-seven".