100402253550 has 72 divisors (see below), whose sum is σ = 270198442800. Its totient is φ = 26729164800.

The previous prime is 100402253543. The next prime is 100402253551. The reversal of 100402253550 is 55352204001.

It is a happy number.

100402253550 is a `hidden beast` number, since 1 + 0 + 0 + 40 + 22 + 53 + 550 = 666.

It is a super-2 number, since 2×100402253550² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100402253551) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 83310 + ... + 455790.

It is an arithmetic number, because the mean of its divisors is an integer number (3752756150).

Almost surely, 2^100402253550 is an apocalyptic number.

100402253550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 100402253550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (135099221400).

100402253550 is an abundant number, since it is smaller than the sum of its proper divisors (169796189250).

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

100402253550 is a wasteful number, since it uses less digits than its factorization.

100402253550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 373098 (or 373090 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

Adding to 100402253550 its reverse (55352204001), we get a palindrome (155754457551).

The spelling of 100402253550 in words is "one hundred billion, four hundred two million, two hundred fifty-three thousand, five hundred fifty".