101725978458 has 64 divisors (see below), whose sum is σ = 221714841600. Its totient is φ = 30927536640.

The previous prime is 101725978457. The next prime is 101725978483. The reversal of 101725978458 is 854879527101.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 101725978398 and 101725978407.

It is not an unprimeable number, because it can be changed into a prime (101725978457) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12415143 + ... + 12423333.

It is an arithmetic number, because the mean of its divisors is an integer number (3464294400).

Almost surely, 2^101725978458 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 101725978458, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (110857420800).

101725978458 is an abundant number, since it is smaller than the sum of its proper divisors (119988863142).

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

101725978458 is a wasteful number, since it uses less digits than its factorization.

101725978458 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10087.

The product of its (nonzero) digits is 5644800, while the sum is 57.

The spelling of 101725978458 in words is "one hundred one billion, seven hundred twenty-five million, nine hundred seventy-eight thousand, four hundred fifty-eight".