40981077987 has 8 divisors (see below), whose sum is σ = 54642991104. Its totient is φ = 27319941768.

The previous prime is 40981077983. The next prime is 40981077997. The reversal of 40981077987 is 78977018904.

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

It is not a de Polignac number, because 40981077987 - 2² = 40981077983 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40981077987.

It is not an unprimeable number, because it can be changed into a prime (40981077983) 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, 57363 + ... + 291980.

It is an arithmetic number, because the mean of its divisors is an integer number (6830373888).

Almost surely, 2^40981077987 is an apocalyptic number.

40981077987 is a deficient number, since it is larger than the sum of its proper divisors (13661913117).

40981077987 is a wasteful number, since it uses less digits than its factorization.

40981077987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 388449.

The product of its (nonzero) digits is 7112448, while the sum is 60.

The spelling of 40981077987 in words is "forty billion, nine hundred eighty-one million, seventy-seven thousand, nine hundred eighty-seven".