15535842379 has 2 divisors, whose sum is σ = 15535842380. Its totient is φ = 15535842378.

The previous prime is 15535842373. The next prime is 15535842391. The reversal of 15535842379 is 97324853551.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15535842379 is a prime.

It is not a weakly prime, because it can be changed into another prime (15535842373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7767921189 + 7767921190.

It is an arithmetic number, because the mean of its divisors is an integer number (7767921190).

Almost surely, 2^15535842379 is an apocalyptic number.

15535842379 is a deficient number, since it is larger than the sum of its proper divisors (1).

15535842379 is an equidigital number, since it uses as much as digits as its factorization.

15535842379 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4536000, while the sum is 52.

The spelling of 15535842379 in words is "fifteen billion, five hundred thirty-five million, eight hundred forty-two thousand, three hundred seventy-nine".