43670780157 has 16 divisors (see below), whose sum is σ = 61761260160. Its totient is φ = 27353098752.

The previous prime is 43670780129. The next prime is 43670780173. The reversal of 43670780157 is 75108707634.

It is not a de Polignac number, because 43670780157 - 2¹⁰ = 43670779133 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43670780107) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 723433 + ... + 781470.

It is an arithmetic number, because the mean of its divisors is an integer number (3860078760).

Almost surely, 2^43670780157 is an apocalyptic number.

It is an amenable number.

43670780157 is a deficient number, since it is larger than the sum of its proper divisors (18090480003).

43670780157 is a wasteful number, since it uses less digits than its factorization.

43670780157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1505492.

The product of its (nonzero) digits is 987840, while the sum is 48.

The spelling of 43670780157 in words is "forty-three billion, six hundred seventy million, seven hundred eighty thousand, one hundred fifty-seven".