45954636781 has 4 divisors (see below), whose sum is σ = 46236567232. Its totient is φ = 45672706332.

The previous prime is 45954636779. The next prime is 45954636797. The reversal of 45954636781 is 18763645954.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 18763645954 = 2 ⋅9381822977.

It is a cyclic number.

It is not a de Polignac number, because 45954636781 - 2¹ = 45954636779 is a prime.

It is a super-2 number, since 2×45954636781² (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 (45954636731) 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, 140964981 + ... + 140965306.

It is an arithmetic number, because the mean of its divisors is an integer number (11559141808).

Almost surely, 2^45954636781 is an apocalyptic number.

It is an amenable number.

45954636781 is a deficient number, since it is larger than the sum of its proper divisors (281930451).

45954636781 is a wasteful number, since it uses less digits than its factorization.

45954636781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281930450.

The product of its digits is 21772800, while the sum is 58.

The spelling of 45954636781 in words is "forty-five billion, nine hundred fifty-four million, six hundred thirty-six thousand, seven hundred eighty-one".