102566421501 has 8 divisors (see below), whose sum is σ = 136771587264. Its totient is φ = 68369435040.

The previous prime is 102566421499. The next prime is 102566421523. The reversal of 102566421501 is 105124665201.

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

It is not a de Polignac number, because 102566421501 - 2¹ = 102566421499 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102566431501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2015505 + ... + 2065766.

It is an arithmetic number, because the mean of its divisors is an integer number (17096448408).

Almost surely, 2^102566421501 is an apocalyptic number.

It is an amenable number.

102566421501 is a deficient number, since it is larger than the sum of its proper divisors (34205165763).

102566421501 is an equidigital number, since it uses as much as digits as its factorization.

102566421501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4089651.

The product of its (nonzero) digits is 14400, while the sum is 33.

The spelling of 102566421501 in words is "one hundred two billion, five hundred sixty-six million, four hundred twenty-one thousand, five hundred one".