45124999991 has 8 divisors (see below), whose sum is σ = 46662240768. Its totient is φ = 43592859000.

The previous prime is 45124999973. The next prime is 45125000009. The reversal of 45124999991 is 19999942154.

45124999991 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (45124999973) and next prime (45125000009).

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45124999991 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 (45124999951) 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, 1256945 + ... + 1292346.

It is an arithmetic number, because the mean of its divisors is an integer number (5832780096).

Almost surely, 2^45124999991 is an apocalyptic number.

45124999991 is a deficient number, since it is larger than the sum of its proper divisors (1537240777).

45124999991 is a wasteful number, since it uses less digits than its factorization.

45124999991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2549893.

The product of its digits is 9447840, while the sum is 62.

The spelling of 45124999991 in words is "forty-five billion, one hundred twenty-four million, nine hundred ninety-nine thousand, nine hundred ninety-one".