45175237640 has 128 divisors (see below), whose sum is σ = 116006929920. Its totient is φ = 15684710400.

The previous prime is 45175237637. The next prime is 45175237649. The reversal of 45175237640 is 4673257154.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 45175237591 and 45175237600.

It is not an unprimeable number, because it can be changed into a prime (45175237649) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16184645 + ... + 16187435.

It is an arithmetic number, because the mean of its divisors is an integer number (906304140).

Almost surely, 2^45175237640 is an apocalyptic number.

45175237640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 45175237640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58003464960).

45175237640 is an abundant number, since it is smaller than the sum of its proper divisors (70831692280).

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

45175237640 is a wasteful number, since it uses less digits than its factorization.

45175237640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4663 (or 4659 counting only the distinct ones).

The product of its (nonzero) digits is 705600, while the sum is 44.

The spelling of 45175237640 in words is "forty-five billion, one hundred seventy-five million, two hundred thirty-seven thousand, six hundred forty".