101645134420 has 24 divisors (see below), whose sum is σ = 218660998248. Its totient is φ = 39666393600.

The previous prime is 101645134337. The next prime is 101645134429. The reversal of 101645134420 is 24431546101.

It can be written as a sum of positive squares in 4 ways, for example, as 13011508624 + 88633625796 = 114068^2 + 297714^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101645134429) 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, 61977921 + ... + 61979560.

It is an arithmetic number, because the mean of its divisors is an integer number (9110874927).

Almost surely, 2^101645134420 is an apocalyptic number.

101645134420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101645134420 is an abundant number, since it is smaller than the sum of its proper divisors (117015863828).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

101645134420 is a wasteful number, since it uses less digits than its factorization.

101645134420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123957531 (or 123957529 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 31.

The spelling of 101645134420 in words is "one hundred one billion, six hundred forty-five million, one hundred thirty-four thousand, four hundred twenty".