40685258064 has 40 divisors (see below), whose sum is σ = 114658456032. Its totient is φ = 12328865920.

The previous prime is 40685258039. The next prime is 40685258113. The reversal of 40685258064 is 46085258604.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38527179 + ... + 38528234.

Almost surely, 2^40685258064 is an apocalyptic number.

40685258064 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

40685258064 is an abundant number, since it is smaller than the sum of its proper divisors (73973197968).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40685258064 is a wasteful number, since it uses less digits than its factorization.

40685258064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77055435 (or 77055429 counting only the distinct ones).

The product of its (nonzero) digits is 1843200, while the sum is 48.

The spelling of 40685258064 in words is "forty billion, six hundred eighty-five million, two hundred fifty-eight thousand, sixty-four".