45450042100 has 36 divisors (see below), whose sum is σ = 98735527744. Its totient is φ = 18159936480.

The previous prime is 45450042091. The next prime is 45450042109. The reversal of 45450042100 is 124005454.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (45450042091) and next prime (45450042109).

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45450042109) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 159852 + ... + 341251.

Almost surely, 2^45450042100 is an apocalyptic number.

It is an amenable number.

45450042100 is an abundant number, since it is smaller than the sum of its proper divisors (53285485644).

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

45450042100 is a wasteful number, since it uses less digits than its factorization.

45450042100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 502024 (or 502017 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 25.

Adding to 45450042100 its reverse (124005454), we get a palindrome (45574047554).

The spelling of 45450042100 in words is "forty-five billion, four hundred fifty million, forty-two thousand, one hundred".