45145551651 has 4 divisors (see below), whose sum is σ = 60194068872. Its totient is φ = 30097034432.

The previous prime is 45145551631. The next prime is 45145551653. The reversal of 45145551651 is 15615554154.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 45145551651 - 2⁷ = 45145551523 is a prime.

It is not an unprimeable number, because it can be changed into a prime (45145551653) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7524258606 + ... + 7524258611.

It is an arithmetic number, because the mean of its divisors is an integer number (15048517218).

Almost surely, 2^45145551651 is an apocalyptic number.

45145551651 is a deficient number, since it is larger than the sum of its proper divisors (15048517221).

45145551651 is a wasteful number, since it uses less digits than its factorization.

45145551651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15048517220.

The product of its digits is 300000, while the sum is 42.

The spelling of 45145551651 in words is "forty-five billion, one hundred forty-five million, five hundred fifty-one thousand, six hundred fifty-one".