7719505145 has 64 divisors (see below), whose sum is σ = 10652221440. Its totient is φ = 5319475200.

The previous prime is 7719505097. The next prime is 7719505159. The reversal of 7719505145 is 5415059177.

It is not a de Polignac number, because 7719505145 - 2¹⁴ = 7719488761 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 7719505096 and 7719505105.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 30036857 + ... + 30037113.

It is an arithmetic number, because the mean of its divisors is an integer number (166440960).

Almost surely, 2^7719505145 is an apocalyptic number.

It is an amenable number.

7719505145 is a deficient number, since it is larger than the sum of its proper divisors (2932716295).

7719505145 is a wasteful number, since it uses less digits than its factorization.

7719505145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 606.

The product of its (nonzero) digits is 220500, while the sum is 44.

The square root of 7719505145 is about 87860.7144576004. The cubic root of 7719505145 is about 1976.3467944636.

The spelling of 7719505145 in words is "seven billion, seven hundred nineteen million, five hundred five thousand, one hundred forty-five".