100145134278 has 24 divisors (see below), whose sum is σ = 247978428048. Its totient is φ = 28612895472.

The previous prime is 100145134277. The next prime is 100145134303. The reversal of 100145134278 is 872431541001.

100145134278 is a `hidden beast` number, since 100 + 1 + 451 + 34 + 2 + 78 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100145134277) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 397401201 + ... + 397401452.

It is an arithmetic number, because the mean of its divisors is an integer number (10332434502).

Almost surely, 2^100145134278 is an apocalyptic number.

100145134278 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

100145134278 is an abundant number, since it is smaller than the sum of its proper divisors (147833293770).

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

100145134278 is a wasteful number, since it uses less digits than its factorization.

100145134278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 794802668 (or 794802665 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 36.

Adding to 100145134278 its reverse (872431541001), we get a palindrome (972576675279).

The spelling of 100145134278 in words is "one hundred billion, one hundred forty-five million, one hundred thirty-four thousand, two hundred seventy-eight".