615380999999 has 2 divisors, whose sum is σ = 615381000000. Its totient is φ = 615380999998.

The previous prime is 615380999983. The next prime is 615381000023. The reversal of 615380999999 is 999999083516.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 615380999999 - 2⁴ = 615380999983 is a prime.

615380999999 is a modest number, since divided by 999999 gives 615380 as remainder.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (615380999699) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 307690499999 + 307690500000.

It is an arithmetic number, because the mean of its divisors is an integer number (307690500000).

Almost surely, 2^615380999999 is an apocalyptic number.

615380999999 is a deficient number, since it is larger than the sum of its proper divisors (1).

615380999999 is an equidigital number, since it uses as much as digits as its factorization.

615380999999 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 382637520, while the sum is 77.

The spelling of 615380999999 in words is "six hundred fifteen billion, three hundred eighty million, nine hundred ninety-nine thousand, nine hundred ninety-nine".