7423820751545 has 8 divisors (see below), whose sum is σ = 9718456256640. Its totient is φ = 5399142364720.

The previous prime is 7423820751437. The next prime is 7423820751547. The reversal of 7423820751545 is 5451570283247.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 7423820751545 - 2³⁰ = 7422747009721 is a prime.

It is a super-2 number, since 2×7423820751545² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (7423820751547) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67489279505 + ... + 67489279614.

It is an arithmetic number, because the mean of its divisors is an integer number (1214807032080).

Almost surely, 2^{7423820751545} is an apocalyptic number.

It is an amenable number.

7423820751545 is a deficient number, since it is larger than the sum of its proper divisors (2294635505095).

7423820751545 is a wasteful number, since it uses less digits than its factorization.

7423820751545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134978559135.

The product of its (nonzero) digits is 9408000, while the sum is 53.

The spelling of 7423820751545 in words is "seven trillion, four hundred twenty-three billion, eight hundred twenty million, seven hundred fifty-one thousand, five hundred forty-five".