43139450004 has 24 divisors (see below), whose sum is σ = 115038533568. Its totient is φ = 12325557120.

The previous prime is 43139449993. The next prime is 43139450009. The reversal of 43139450004 is 40005493134.

It is a super-2 number, since 2×43139450004² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43139450009) 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, 256782357 + ... + 256782524.

It is an arithmetic number, because the mean of its divisors is an integer number (4793272232).

Almost surely, 2^43139450004 is an apocalyptic number.

It is an amenable number.

43139450004 is an abundant number, since it is smaller than the sum of its proper divisors (71899083564).

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

43139450004 is a wasteful number, since it uses less digits than its factorization.

43139450004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 513564895 (or 513564893 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 33.

The spelling of 43139450004 in words is "forty-three billion, one hundred thirty-nine million, four hundred fifty thousand, four".