7915055945 has 8 divisors (see below), whose sum is σ = 9729727560. Its totient is φ = 6177604480.

The previous prime is 7915055903. The next prime is 7915055977. The reversal of 7915055945 is 5495505197.

It can be written as a sum of positive squares in 4 ways, for example, as 773284864 + 7141771081 = 27808^2 + 84509^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 7915055945 - 2⁸ = 7915055689 is a prime.

It is a super-2 number, since 2×7915055945² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 7915055893 and 7915055902.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19304810 + ... + 19305219.

It is an arithmetic number, because the mean of its divisors is an integer number (1216215945).

Almost surely, 2^7915055945 is an apocalyptic number.

It is an amenable number.

7915055945 is a deficient number, since it is larger than the sum of its proper divisors (1814671615).

7915055945 is a wasteful number, since it uses less digits than its factorization.

7915055945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38610075.

The product of its (nonzero) digits is 1417500, while the sum is 50.

The square root of 7915055945 is about 88966.6001654554. The cubic root of 7915055945 is about 1992.8961261127.

The spelling of 7915055945 in words is "seven billion, nine hundred fifteen million, fifty-five thousand, nine hundred forty-five".