20401315713550 has 12 divisors (see below), whose sum is σ = 37946447227296. Its totient is φ = 8160526285400.

The previous prime is 20401315713547. The next prime is 20401315713557. The reversal of 20401315713550 is 5531751310402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20401315713557) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 204013157086 + ... + 204013157185.

It is an arithmetic number, because the mean of its divisors is an integer number (3162203935608).

Almost surely, 2^{20401315713550} is an apocalyptic number.

20401315713550 is a deficient number, since it is larger than the sum of its proper divisors (17545131513746).

20401315713550 is a wasteful number, since it uses less digits than its factorization.

20401315713550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408026314283 (or 408026314278 counting only the distinct ones).

The product of its (nonzero) digits is 63000, while the sum is 37.

The spelling of 20401315713550 in words is "twenty trillion, four hundred one billion, three hundred fifteen million, seven hundred thirteen thousand, five hundred fifty".