2031551555416 has 8 divisors (see below), whose sum is σ = 3809159166420. Its totient is φ = 1015775777704.

The previous prime is 2031551555393. The next prime is 2031551555479. The reversal of 2031551555416 is 6145551551302.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126971972206 + ... + 126971972221.

Almost surely, 2^{2031551555416} is an apocalyptic number.

It is an amenable number.

2031551555416 is a deficient number, since it is larger than the sum of its proper divisors (1777607611004).

2031551555416 is a wasteful number, since it uses less digits than its factorization.

2031551555416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253943944433 (or 253943944429 counting only the distinct ones).

The product of its (nonzero) digits is 450000, while the sum is 43.

It can be divided in two parts, 203155 and 1555416, that added together give a palindrome (1758571).

The spelling of 2031551555416 in words is "two trillion, thirty-one billion, five hundred fifty-one million, five hundred fifty-five thousand, four hundred sixteen".