45017150978 has 4 divisors (see below), whose sum is σ = 67525726470. Its totient is φ = 22508575488.

The previous prime is 45017150977. The next prime is 45017150987. The reversal of 45017150978 is 87905171054.

45017150978 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 87905171054 = 2 ⋅43952585527.

It can be written as a sum of positive squares in only one way, i.e., 27990293809 + 17026857169 = 167303^2 + 130487^2 .

It is not an unprimeable number, because it can be changed into a prime (45017150977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11254287743 + ... + 11254287746.

Almost surely, 2^45017150978 is an apocalyptic number.

45017150978 is a deficient number, since it is larger than the sum of its proper divisors (22508575492).

45017150978 is a wasteful number, since it uses less digits than its factorization.

45017150978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22508575491.

The product of its (nonzero) digits is 352800, while the sum is 47.

The spelling of 45017150978 in words is "forty-five billion, seventeen million, one hundred fifty thousand, nine hundred seventy-eight".