40766979969 has 10 divisors (see below), whose sum is σ = 60898822050. Its totient is φ = 27177986592.

The previous prime is 40766979961. The next prime is 40766979971. The reversal of 40766979969 is 96997966704.

40766979969 is a `hidden beast` number, since 407 + 6 + 69 + 79 + 96 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 40617162369 + 149817600 = 201537^2 + 12240^2 .

It is not a de Polignac number, because 40766979969 - 2³ = 40766979961 is a prime.

It is a super-2 number, since 2×40766979969² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 40766979897 and 40766979906.

It is not an unprimeable number, because it can be changed into a prime (40766979961) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 251647944 + ... + 251648105.

It is an arithmetic number, because the mean of its divisors is an integer number (6089882205).

Almost surely, 2^40766979969 is an apocalyptic number.

It is an amenable number.

40766979969 is a deficient number, since it is larger than the sum of its proper divisors (20131842081).

40766979969 is an equidigital number, since it uses as much as digits as its factorization.

40766979969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 503296061 (or 503296052 counting only the distinct ones).

The product of its (nonzero) digits is 277766496, while the sum is 72.

The spelling of 40766979969 in words is "forty billion, seven hundred sixty-six million, nine hundred seventy-nine thousand, nine hundred sixty-nine".