45646601778 has 24 divisors (see below), whose sum is σ = 99044124816. Its totient is φ = 15193510200.

The previous prime is 45646601701. The next prime is 45646601789. The reversal of 45646601778 is 87710664654.

45646601778 is a `hidden beast` number, since 4 + 5 + 6 + 466 + 0 + 177 + 8 = 666.

It is a super-6 number, since 6×45646601778⁶ (a number of 65 digits) contains 666666 as substring. Note that it is a super-d number also for d = 2.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1822528 + ... + 1847403.

It is an arithmetic number, because the mean of its divisors is an integer number (4126838534).

Almost surely, 2^45646601778 is an apocalyptic number.

45646601778 is an abundant number, since it is smaller than the sum of its proper divisors (53397523038).

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

45646601778 is a wasteful number, since it uses less digits than its factorization.

45646601778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3670630 (or 3670627 counting only the distinct ones).

The product of its (nonzero) digits is 6773760, while the sum is 54.

The spelling of 45646601778 in words is "forty-five billion, six hundred forty-six million, six hundred one thousand, seven hundred seventy-eight".