40598705687 has 4 divisors (see below), whose sum is σ = 40730949336. Its totient is φ = 40466462040.

The previous prime is 40598705681. The next prime is 40598705689. The reversal of 40598705687 is 78650789504.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 40598705687 - 2¹⁴ = 40598689303 is a prime.

It is a super-2 number, since 2×40598705687² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40598705681) 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, 66121364 + ... + 66121977.

It is an arithmetic number, because the mean of its divisors is an integer number (10182737334).

Almost surely, 2^40598705687 is an apocalyptic number.

40598705687 is a deficient number, since it is larger than the sum of its proper divisors (132243649).

40598705687 is a wasteful number, since it uses less digits than its factorization.

40598705687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132243648.

The product of its (nonzero) digits is 16934400, while the sum is 59.

The spelling of 40598705687 in words is "forty billion, five hundred ninety-eight million, seven hundred five thousand, six hundred eighty-seven".