45102020240 has 40 divisors (see below), whose sum is σ = 107696317560. Its totient is φ = 17553217536.

The previous prime is 45102020237. The next prime is 45102020263. The reversal of 45102020240 is 4202020154.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 6855177616 + 38246842624 = 82796^2 + 195568^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7615625 + ... + 7621544.

It is an arithmetic number, because the mean of its divisors is an integer number (2692407939).

Almost surely, 2^45102020240 is an apocalyptic number.

45102020240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

45102020240 is an abundant number, since it is smaller than the sum of its proper divisors (62594297320).

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

45102020240 is a wasteful number, since it uses less digits than its factorization.

45102020240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15237219 (or 15237213 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 20.

Adding to 45102020240 its reverse (4202020154), we get a palindrome (49304040394).

The spelling of 45102020240 in words is "forty-five billion, one hundred two million, twenty thousand, two hundred forty".