103061554661 has 4 divisors (see below), whose sum is σ = 110989366572. Its totient is φ = 95133742752.

The previous prime is 103061554637. The next prime is 103061554679. The reversal of 103061554661 is 166455160301.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 166455160301 = 2129 ⋅78184669.

It can be written as a sum of positive squares in 2 ways, for example, as 66118408225 + 36943146436 = 257135^2 + 192206^2 .

It is a cyclic number.

It is not a de Polignac number, because 103061554661 - 2²⁶ = 102994445797 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103061554601) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3963905936 + ... + 3963905961.

It is an arithmetic number, because the mean of its divisors is an integer number (27747341643).

Almost surely, 2^103061554661 is an apocalyptic number.

It is an amenable number.

103061554661 is a deficient number, since it is larger than the sum of its proper divisors (7927811911).

103061554661 is an equidigital number, since it uses as much as digits as its factorization.

103061554661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7927811910.

The product of its (nonzero) digits is 64800, while the sum is 38.

The spelling of 103061554661 in words is "one hundred three billion, sixty-one million, five hundred fifty-four thousand, six hundred sixty-one".