45390728601 has 27 divisors (see below), whose sum is σ = 67033416853. Its totient is φ = 29597044920.

The previous prime is 45390728599. The next prime is 45390728609. The reversal of 45390728601 is 10682709354.

The square root of 45390728601 is 213051.

It is a perfect power (a square), and thus also a powerful number.

45390728601 is a `hidden beast` number, since 4 + 5 + 39 + 0 + 7 + 2 + 8 + 601 = 666.

It is not a de Polignac number, because 45390728601 - 2¹ = 45390728599 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45390728609) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 30039436 + ... + 30040946.

It is a 1-persistent number, because it is pandigital, but 2⋅45390728601 = 90781457202 is not.

Almost surely, 2^45390728601 is an apocalyptic number.

45390728601 is the 213051-st square number.

45390728601 is the 106526-th centered octagonal number.

It is an amenable number.

45390728601 is a deficient number, since it is larger than the sum of its proper divisors (21642688252).

45390728601 is an frugal number, since it uses more digits than its factorization.

45390728601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3122 (or 1561 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 45.

The spelling of 45390728601 in words is "forty-five billion, three hundred ninety million, seven hundred twenty-eight thousand, six hundred one".