101620556771 has 16 divisors (see below), whose sum is σ = 107110840320. Its totient is φ = 96223258560.

The previous prime is 101620556747. The next prime is 101620556797. The reversal of 101620556771 is 177655026101.

It is a cyclic number.

It is not a de Polignac number, because 101620556771 - 2¹⁴ = 101620540387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (101620556371) 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, 1191086 + ... + 1273548.

It is an arithmetic number, because the mean of its divisors is an integer number (6694427520).

Almost surely, 2^101620556771 is an apocalyptic number.

101620556771 is a deficient number, since it is larger than the sum of its proper divisors (5490283549).

101620556771 is a wasteful number, since it uses less digits than its factorization.

101620556771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83026.

The product of its (nonzero) digits is 88200, while the sum is 41.

The spelling of 101620556771 in words is "one hundred one billion, six hundred twenty million, five hundred fifty-six thousand, seven hundred seventy-one".