102268461561 has 32 divisors (see below), whose sum is σ = 164788248576. Its totient is φ = 55174608000.

The previous prime is 102268461443. The next prime is 102268461593. The reversal of 102268461561 is 165164862201.

It is not a de Polignac number, because 102268461561 - 2¹⁰ = 102268460537 is a prime.

It is not an unprimeable number, because it can be changed into a prime (102268461661) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1889095 + ... + 1942476.

It is an arithmetic number, because the mean of its divisors is an integer number (5149632768).

Almost surely, 2^102268461561 is an apocalyptic number.

It is an amenable number.

102268461561 is a deficient number, since it is larger than the sum of its proper divisors (62519787015).

102268461561 is a wasteful number, since it uses less digits than its factorization.

102268461561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3831653.

The product of its (nonzero) digits is 138240, while the sum is 42.

The spelling of 102268461561 in words is "one hundred two billion, two hundred sixty-eight million, four hundred sixty-one thousand, five hundred sixty-one".