45142220646 has 80 divisors (see below), whose sum is σ = 105492562560. Its totient is φ = 14411727360.

The previous prime is 45142220639. The next prime is 45142220653. The reversal of 45142220646 is 64602224154.

45142220646 is a `hidden beast` number, since 4 + 5 + 1 + 4 + 2 + 2 + 2 + 0 + 646 = 666.

It is an interprime number because it is at equal distance from previous prime (45142220639) and next prime (45142220653).

It is a self number, because there is not a number n which added to its sum of digits gives 45142220646.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 440800 + ... + 533468.

It is an arithmetic number, because the mean of its divisors is an integer number (1318657032).

Almost surely, 2^45142220646 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 45142220646, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52746281280).

45142220646 is an abundant number, since it is smaller than the sum of its proper divisors (60350341914).

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

45142220646 is a wasteful number, since it uses less digits than its factorization.

45142220646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92811 (or 92802 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 36.

The spelling of 45142220646 in words is "forty-five billion, one hundred forty-two million, two hundred twenty thousand, six hundred forty-six".