45319953978 has 32 divisors (see below), whose sum is σ = 108458011200. Its totient is φ = 13944601008.

The previous prime is 45319953947. The next prime is 45319953979. The reversal of 45319953978 is 87935991354.

45319953978 is a `hidden beast` number, since 4 + 5 + 3 + 1 + 99 + 539 + 7 + 8 = 666.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (45319953979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32278468 + ... + 32279871.

It is an arithmetic number, because the mean of its divisors is an integer number (3389312850).

Almost surely, 2^45319953978 is an apocalyptic number.

45319953978 is an abundant number, since it is smaller than the sum of its proper divisors (63138057222).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

45319953978 is a wasteful number, since it uses less digits than its factorization.

45319953978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64558363 (or 64558357 counting only the distinct ones).

The product of its digits is 36741600, while the sum is 63.

The spelling of 45319953978 in words is "forty-five billion, three hundred nineteen million, nine hundred fifty-three thousand, nine hundred seventy-eight".