45509923381 has 8 divisors (see below), whose sum is σ = 49026109664. Its totient is φ = 41995940400.

The previous prime is 45509923367. The next prime is 45509923439. The reversal of 45509923381 is 18332990554.

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 45509923381 - 2¹³ = 45509915189 is a prime.

It is a super-2 number, since 2×45509923381² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45509923301) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 507795 + ... + 590656.

It is an arithmetic number, because the mean of its divisors is an integer number (6128263708).

Almost surely, 2^45509923381 is an apocalyptic number.

It is an amenable number.

45509923381 is a deficient number, since it is larger than the sum of its proper divisors (3516186283).

45509923381 is a wasteful number, since it uses less digits than its factorization.

45509923381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1101651.

The product of its (nonzero) digits is 1166400, while the sum is 49.

The spelling of 45509923381 in words is "forty-five billion, five hundred nine million, nine hundred twenty-three thousand, three hundred eighty-one".