45521555440 has 40 divisors (see below), whose sum is σ = 108419029488. Its totient is φ = 17764508160.

The previous prime is 45521555437. The next prime is 45521555473. The reversal of 45521555440 is 4455512554.

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 (40).

It is a junction number, because it is equal to n+sod(n) for n = 45521555393 and 45521555402.

It is a congruent number.

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, 6935982 + ... + 6942541.

Almost surely, 2^45521555440 is an apocalyptic number.

45521555440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

45521555440 is an abundant number, since it is smaller than the sum of its proper divisors (62897474048).

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

45521555440 is a wasteful number, since it uses less digits than its factorization.

45521555440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13878577 (or 13878571 counting only the distinct ones).

The product of its (nonzero) digits is 400000, while the sum is 40.

The spelling of 45521555440 in words is "forty-five billion, five hundred twenty-one million, five hundred fifty-five thousand, four hundred forty".