7455478666157 has 16 divisors (see below), whose sum is σ = 7717565081520. Its totient is φ = 7197299904000.

The previous prime is 7455478666127. The next prime is 7455478666159. The reversal of 7455478666157 is 7516668745547.

It can be written as a sum of positive squares in 8 ways, for example, as 947704197001 + 6507774469156 = 973501^2 + 2551034^2 .

It is a cyclic number.

It is not a de Polignac number, because 7455478666157 - 2³⁶ = 7386759189421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7455478666159) 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, 6371963 + ... + 7450695.

It is an arithmetic number, because the mean of its divisors is an integer number (482347817595).

Almost surely, 2^{7455478666157} is an apocalyptic number.

It is an amenable number.

7455478666157 is a deficient number, since it is larger than the sum of its proper divisors (262086415363).

7455478666157 is a wasteful number, since it uses less digits than its factorization.

7455478666157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1080544.

The product of its digits is 1185408000, while the sum is 71.

The spelling of 7455478666157 in words is "seven trillion, four hundred fifty-five billion, four hundred seventy-eight million, six hundred sixty-six thousand, one hundred fifty-seven".