38779297741 has 2 divisors, whose sum is σ = 38779297742. Its totient is φ = 38779297740.

The previous prime is 38779297723. The next prime is 38779297819. The reversal of 38779297741 is 14779297783.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30147029641 + 8632268100 = 173629^2 + 92910^2 .

It is a cyclic number.

It is not a de Polignac number, because 38779297741 - 2¹¹ = 38779295693 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38779297721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19389648870 + 19389648871.

It is an arithmetic number, because the mean of its divisors is an integer number (19389648871).

Almost surely, 2^38779297741 is an apocalyptic number.

It is an amenable number.

38779297741 is a deficient number, since it is larger than the sum of its proper divisors (1).

38779297741 is an equidigital number, since it uses as much as digits as its factorization.

38779297741 is an evil number, because the sum of its binary digits is even.

The product of its digits is 37340352, while the sum is 64.

The spelling of 38779297741 in words is "thirty-eight billion, seven hundred seventy-nine million, two hundred ninety-seven thousand, seven hundred forty-one".