101861213898 has 16 divisors (see below), whose sum is σ = 204474174336. Its totient is φ = 33828446880.

The previous prime is 101861213873. The next prime is 101861213929. The reversal of 101861213898 is 898312168101.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31321011 + ... + 31324262.

It is an arithmetic number, because the mean of its divisors is an integer number (12779635896).

Almost surely, 2^101861213898 is an apocalyptic number.

101861213898 is an abundant number, since it is smaller than the sum of its proper divisors (102612960438).

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

101861213898 is a wasteful number, since it uses less digits than its factorization.

101861213898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62645549.

The product of its (nonzero) digits is 165888, while the sum is 48.

The spelling of 101861213898 in words is "one hundred one billion, eight hundred sixty-one million, two hundred thirteen thousand, eight hundred ninety-eight".