31550605083649 has 16 divisors (see below), whose sum is σ = 33440123332800. Its totient is φ = 29664834831360.

The previous prime is 31550605083607. The next prime is 31550605083659. The reversal of 31550605083649 is 94638050605513.

It is a cyclic number.

It is not a de Polignac number, because 31550605083649 - 2¹¹ = 31550605081601 is a prime.

It is a super-2 number, since 2×31550605083649² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 31550605083649.

It is not an unprimeable number, because it can be changed into a prime (31550605083659) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 69410377 + ... + 69863449.

It is an arithmetic number, because the mean of its divisors is an integer number (2090007708300).

Almost surely, 2^{31550605083649} is an apocalyptic number.

It is an amenable number.

31550605083649 is a deficient number, since it is larger than the sum of its proper divisors (1889518249151).

31550605083649 is a wasteful number, since it uses less digits than its factorization.

31550605083649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 457200.

The product of its (nonzero) digits is 11664000, while the sum is 55.

The spelling of 31550605083649 in words is "thirty-one trillion, five hundred fifty billion, six hundred five million, eighty-three thousand, six hundred forty-nine".