45020156621 has 8 divisors (see below), whose sum is σ = 49120167744. Its totient is φ = 40921357120.

The previous prime is 45020156617. The next prime is 45020156639. The reversal of 45020156621 is 12665102054.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 45020156621 - 2² = 45020156617 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45020156611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 224321 + ... + 374646.

It is an arithmetic number, because the mean of its divisors is an integer number (6140020968).

Almost surely, 2^45020156621 is an apocalyptic number.

It is an amenable number.

45020156621 is a deficient number, since it is larger than the sum of its proper divisors (4100011123).

45020156621 is a wasteful number, since it uses less digits than its factorization.

45020156621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 605811.

The product of its (nonzero) digits is 14400, while the sum is 32.

Adding to 45020156621 its reverse (12665102054), we get a palindrome (57685258675).

The spelling of 45020156621 in words is "forty-five billion, twenty million, one hundred fifty-six thousand, six hundred twenty-one".