100561551293471 has 4 divisors (see below), whose sum is σ = 100570636276200. Its totient is φ = 100552466310744.

The previous prime is 100561551293453. The next prime is 100561551293491. The reversal of 100561551293471 is 174392155165001.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100561551293471 is a prime.

It is a super-3 number, since 3×100561551293471³ (a number of 43 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100561551293491) 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, 4542474761 + ... + 4542496898.

It is an arithmetic number, because the mean of its divisors is an integer number (25142659069050).

Almost surely, 2^{100561551293471} is an apocalyptic number.

100561551293471 is a deficient number, since it is larger than the sum of its proper divisors (9084982729).

100561551293471 is an equidigital number, since it uses as much as digits as its factorization.

100561551293471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9084982728.

The product of its (nonzero) digits is 1134000, while the sum is 50.

The spelling of 100561551293471 in words is "one hundred trillion, five hundred sixty-one billion, five hundred fifty-one million, two hundred ninety-three thousand, four hundred seventy-one".