40078050561 has 64 divisors (see below), whose sum is σ = 60802560000. Its totient is φ = 26086769280.

The previous prime is 40078050559. The next prime is 40078050569. The reversal of 40078050561 is 16505087004.

40078050561 is a `hidden beast` number, since 40 + 0 + 7 + 8 + 0 + 50 + 561 = 666.

It is not a de Polignac number, because 40078050561 - 2¹ = 40078050559 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40078050569) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 76924981 + ... + 76925501.

It is an arithmetic number, because the mean of its divisors is an integer number (950040000).

Almost surely, 2^40078050561 is an apocalyptic number.

It is an amenable number.

40078050561 is a deficient number, since it is larger than the sum of its proper divisors (20724509439).

40078050561 is a wasteful number, since it uses less digits than its factorization.

40078050561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 971 (or 965 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 36.

The spelling of 40078050561 in words is "forty billion, seventy-eight million, fifty thousand, five hundred sixty-one".