1515955248139 has 2 divisors, whose sum is σ = 1515955248140. Its totient is φ = 1515955248138.

The previous prime is 1515955248133. The next prime is 1515955248149. The reversal of 1515955248139 is 9318425595151.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1515955248139 is a prime.

It is not a weakly prime, because it can be changed into another prime (1515955248133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 757977624069 + 757977624070.

It is an arithmetic number, because the mean of its divisors is an integer number (757977624070).

Almost surely, 2^{1515955248139} is an apocalyptic number.

1515955248139 is a deficient number, since it is larger than the sum of its proper divisors (1).

1515955248139 is an equidigital number, since it uses as much as digits as its factorization.

1515955248139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9720000, while the sum is 58.

The spelling of 1515955248139 in words is "one trillion, five hundred fifteen billion, nine hundred fifty-five million, two hundred forty-eight thousand, one hundred thirty-nine".