45106989642 has 128 divisors (see below), whose sum is σ = 121561251840. Its totient is φ = 12210264000.

The previous prime is 45106989581. The next prime is 45106989647. The reversal of 45106989642 is 24698960154.

45106989642 is a `hidden beast` number, since 4 + 510 + 6 + 9 + 89 + 6 + 42 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (45106989647) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 145167 + ... + 333597.

It is an arithmetic number, because the mean of its divisors is an integer number (949697280).

Almost surely, 2^45106989642 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 45106989642, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60780625920).

45106989642 is an abundant number, since it is smaller than the sum of its proper divisors (76454262198).

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

45106989642 is a wasteful number, since it uses less digits than its factorization.

45106989642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188497 (or 188491 counting only the distinct ones).

The product of its (nonzero) digits is 3732480, while the sum is 54.

The spelling of 45106989642 in words is "forty-five billion, one hundred six million, nine hundred eighty-nine thousand, six hundred forty-two".