7661541045 has 16 divisors (see below), whose sum is σ = 12979552320. Its totient is φ = 3845793024.

The previous prime is 7661541029. The next prime is 7661541047. The reversal of 7661541045 is 5401451667.

It is not a de Polignac number, because 7661541045 - 2⁴ = 7661541029 is a prime.

It is a super-2 number, since 2×7661541045² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 7661540994 and 7661541012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7661541047) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15022375 + ... + 15022884.

It is an arithmetic number, because the mean of its divisors is an integer number (811222020).

Almost surely, 2^7661541045 is an apocalyptic number.

It is an amenable number.

7661541045 is a deficient number, since it is larger than the sum of its proper divisors (5318011275).

7661541045 is a wasteful number, since it uses less digits than its factorization.

7661541045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30045284.

The product of its (nonzero) digits is 100800, while the sum is 39.

The square root of 7661541045 is about 87530.2293210751. The cubic root of 7661541045 is about 1971.3877074263.

The spelling of 7661541045 in words is "seven billion, six hundred sixty-one million, five hundred forty-one thousand, forty-five".