45551321040 has 80 divisors (see below), whose sum is σ = 141237978048. Its totient is φ = 12144534528.

The previous prime is 45551321033. The next prime is 45551321059. The reversal of 45551321040 is 4012315554.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 45551320989 and 45551321007.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1360339 + ... + 1393421.

Almost surely, 2^45551321040 is an apocalyptic number.

45551321040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

45551321040 is an abundant number, since it is smaller than the sum of its proper divisors (95686657008).

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

45551321040 is a wasteful number, since it uses less digits than its factorization.

45551321040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38836 (or 38830 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 30.

Adding to 45551321040 its reverse (4012315554), we get a palindrome (49563636594).

The spelling of 45551321040 in words is "forty-five billion, five hundred fifty-one million, three hundred twenty-one thousand, forty".