101621672065 has 8 divisors (see below), whose sum is σ = 122314425408. Its totient is φ = 81051725040.

The previous prime is 101621672051. The next prime is 101621672093. The reversal of 101621672065 is 560276126101.

It is a happy number.

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

It is not a de Polignac number, because 101621672065 - 2¹⁵ = 101621639297 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30699757 + ... + 30703066.

It is an arithmetic number, because the mean of its divisors is an integer number (15289303176).

Almost surely, 2^101621672065 is an apocalyptic number.

It is an amenable number.

101621672065 is a deficient number, since it is larger than the sum of its proper divisors (20692753343).

101621672065 is an equidigital number, since it uses as much as digits as its factorization.

101621672065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61403159.

The product of its (nonzero) digits is 30240, while the sum is 37.

Adding to 101621672065 its reverse (560276126101), we get a palindrome (661897798166).

The spelling of 101621672065 in words is "one hundred one billion, six hundred twenty-one million, six hundred seventy-two thousand, sixty-five".