39040662061 has 4 divisors (see below), whose sum is σ = 41337171612. Its totient is φ = 36744152512.

The previous prime is 39040662049. The next prime is 39040662097. The reversal of 39040662061 is 16026604093.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 26768232100 + 12272429961 = 163610^2 + 110781^2 .

It is a de Polignac number, because none of the positive numbers 2^k-39040662061 is a prime.

It is a super-2 number, since 2×39040662061² (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 39040662061.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39040662041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1148254750 + ... + 1148254783.

It is an arithmetic number, because the mean of its divisors is an integer number (10334292903).

Almost surely, 2^39040662061 is an apocalyptic number.

It is an amenable number.

39040662061 is a deficient number, since it is larger than the sum of its proper divisors (2296509551).

39040662061 is a wasteful number, since it uses less digits than its factorization.

39040662061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2296509550.

The product of its (nonzero) digits is 46656, while the sum is 37.

The spelling of 39040662061 in words is "thirty-nine billion, forty million, six hundred sixty-two thousand, sixty-one".