45129749646 has 8 divisors (see below), whose sum is σ = 90259499304. Its totient is φ = 15043249880.

The previous prime is 45129749617. The next prime is 45129749689. The reversal of 45129749646 is 64694792154.

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

45129749646 is an admirable number.

It is a super-2 number, since 2×45129749646² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3760812465 + ... + 3760812476.

It is an arithmetic number, because the mean of its divisors is an integer number (11282437413).

Almost surely, 2^45129749646 is an apocalyptic number.

45129749646 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

45129749646 is a wasteful number, since it uses less digits than its factorization.

45129749646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7521624946.

The product of its digits is 13063680, while the sum is 57.

The spelling of 45129749646 in words is "forty-five billion, one hundred twenty-nine million, seven hundred forty-nine thousand, six hundred forty-six".