45631978027 has 2 divisors, whose sum is σ = 45631978028. Its totient is φ = 45631978026.

The previous prime is 45631978019. The next prime is 45631978043. The reversal of 45631978027 is 72087913654.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 45631978027 - 2³ = 45631978019 is a prime.

It is a super-3 number, since 3×45631978027³ (a number of 33 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (45631978057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22815989013 + 22815989014.

It is an arithmetic number, because the mean of its divisors is an integer number (22815989014).

It is a 1-persistent number, because it is pandigital, but 2⋅45631978027 = 91263956054 is not.

Almost surely, 2^45631978027 is an apocalyptic number.

45631978027 is a deficient number, since it is larger than the sum of its proper divisors (1).

45631978027 is an equidigital number, since it uses as much as digits as its factorization.

45631978027 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2540160, while the sum is 52.

The spelling of 45631978027 in words is "forty-five billion, six hundred thirty-one million, nine hundred seventy-eight thousand, twenty-seven".