43445551051 has 12 divisors (see below), whose sum is σ = 51106557960. Its totient is φ = 36820623840.

The previous prime is 43445551003. The next prime is 43445551081. The reversal of 43445551051 is 15015554434.

It is not a de Polignac number, because 43445551051 - 2¹³ = 43445542859 is a prime.

It is a super-2 number, since 2×43445551051² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 43445551051.

It is not an unprimeable number, because it can be changed into a prime (43445551001) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4976785 + ... + 4985506.

It is an arithmetic number, because the mean of its divisors is an integer number (4258879830).

Almost surely, 2^43445551051 is an apocalyptic number.

43445551051 is a deficient number, since it is larger than the sum of its proper divisors (7661006909).

43445551051 is an equidigital number, since it uses as much as digits as its factorization.

43445551051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9962394 (or 9962387 counting only the distinct ones).

The product of its (nonzero) digits is 120000, while the sum is 37.

The spelling of 43445551051 in words is "forty-three billion, four hundred forty-five million, five hundred fifty-one thousand, fifty-one".