38661353643007 has 16 divisors (see below), whose sum is σ = 41014015967232. Its totient is φ = 36379114428960.

The previous prime is 38661353643001. The next prime is 38661353643103. The reversal of 38661353643007 is 70034635316683.

It is a cyclic number.

It is not a de Polignac number, because 38661353643007 - 2³ = 38661353642999 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38661353643001) 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, 9318943 + ... + 12812704.

It is an arithmetic number, because the mean of its divisors is an integer number (2563375997952).

Almost surely, 2^{38661353643007} is an apocalyptic number.

38661353643007 is a gapful number since it is divisible by the number (37) formed by its first and last digit.

38661353643007 is a deficient number, since it is larger than the sum of its proper divisors (2352662324225).

38661353643007 is a wasteful number, since it uses less digits than its factorization.

38661353643007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22133238.

The product of its (nonzero) digits is 19595520, while the sum is 55.

The spelling of 38661353643007 in words is "thirty-eight trillion, six hundred sixty-one billion, three hundred fifty-three million, six hundred forty-three thousand, seven".