7546400745 has 16 divisors (see below), whose sum is σ = 13003029312. Its totient is φ = 3715151040.

The previous prime is 7546400737. The next prime is 7546400747. The reversal of 7546400745 is 5470046457.

It is not a de Polignac number, because 7546400745 - 2³ = 7546400737 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 7546400697 and 7546400706.

It is not an unprimeable number, because it can be changed into a prime (7546400747) 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, 19349551 + ... + 19349940.

It is an arithmetic number, because the mean of its divisors is an integer number (812689332).

Almost surely, 2^7546400745 is an apocalyptic number.

It is an amenable number.

7546400745 is a deficient number, since it is larger than the sum of its proper divisors (5456628567).

7546400745 is a wasteful number, since it uses less digits than its factorization.

7546400745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38699512.

The product of its (nonzero) digits is 470400, while the sum is 42.

The square root of 7546400745 is about 86870.0221307673. The cubic root of 7546400745 is about 1961.4622526515.

The spelling of 7546400745 in words is "seven billion, five hundred forty-six million, four hundred thousand, seven hundred forty-five".