61052550691 has 16 divisors (see below), whose sum is σ = 66891432960. Its totient is φ = 55261972480.

The previous prime is 61052550677. The next prime is 61052550719. The reversal of 61052550691 is 19605525016.

It is not a de Polignac number, because 61052550691 - 2⁷ = 61052550563 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61052550631) 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, 10510710 + ... + 10516516.

It is an arithmetic number, because the mean of its divisors is an integer number (4180714560).

Almost surely, 2^61052550691 is an apocalyptic number.

61052550691 is a deficient number, since it is larger than the sum of its proper divisors (5838882269).

61052550691 is a wasteful number, since it uses less digits than its factorization.

61052550691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9794.

The product of its (nonzero) digits is 81000, while the sum is 40.

The spelling of 61052550691 in words is "sixty-one billion, fifty-two million, five hundred fifty thousand, six hundred ninety-one".