101440633420 has 24 divisors (see below), whose sum is σ = 243457520544. Its totient is φ = 34779645696.

The previous prime is 101440633397. The next prime is 101440633423. The reversal of 101440633420 is 24336044101.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is not an unprimeable number, because it can be changed into a prime (101440633423) 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, 362287837 + ... + 362288116.

It is an arithmetic number, because the mean of its divisors is an integer number (10144063356).

Almost surely, 2^101440633420 is an apocalyptic number.

101440633420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101440633420 is an abundant number, since it is smaller than the sum of its proper divisors (142016887124).

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

101440633420 is a wasteful number, since it uses less digits than its factorization.

101440633420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 724575969 (or 724575967 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 101440633420 its reverse (24336044101), we get a palindrome (125776677521).

The spelling of 101440633420 in words is "one hundred one billion, four hundred forty million, six hundred thirty-three thousand, four hundred twenty".