45001721501 has 8 divisors (see below), whose sum is σ = 51227256384. Its totient is φ = 39131931520.

The previous prime is 45001721431. The next prime is 45001721507. The reversal of 45001721501 is 10512710054.

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

It is not a de Polignac number, because 45001721501 - 2²⁶ = 44934612637 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45001721507) 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, 88935956 + ... + 88936461.

It is an arithmetic number, because the mean of its divisors is an integer number (6403407048).

Almost surely, 2^45001721501 is an apocalyptic number.

It is an amenable number.

45001721501 is a deficient number, since it is larger than the sum of its proper divisors (6225534883).

45001721501 is a wasteful number, since it uses less digits than its factorization.

45001721501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177872451.

The product of its (nonzero) digits is 1400, while the sum is 26.

The spelling of 45001721501 in words is "forty-five billion, one million, seven hundred twenty-one thousand, five hundred one".