38721341371357 has 16 divisors (see below), whose sum is σ = 42103780662384. Its totient is φ = 35466081280000.

The previous prime is 38721341371283. The next prime is 38721341371367. The reversal of 38721341371357 is 75317314312783.

It can be written as a sum of positive squares in 8 ways, for example, as 778525640281 + 37942815731076 = 882341^2 + 6159774^2 .

It is a cyclic number.

It is not a de Polignac number, because 38721341371357 - 2²³ = 38721332982749 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 38721341371298 and 38721341371307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38721341371367) 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, 68990194 + ... + 69549187.

It is an arithmetic number, because the mean of its divisors is an integer number (2631486291399).

Almost surely, 2^{38721341371357} is an apocalyptic number.

It is an amenable number.

38721341371357 is a deficient number, since it is larger than the sum of its proper divisors (3382439291027).

38721341371357 is a wasteful number, since it uses less digits than its factorization.

38721341371357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138539840.

The product of its digits is 8890560, while the sum is 55.

The spelling of 38721341371357 in words is "thirty-eight trillion, seven hundred twenty-one billion, three hundred forty-one million, three hundred seventy-one thousand, three hundred fifty-seven".