101234656540 has 24 divisors (see below), whose sum is σ = 212616265680. Its totient is φ = 40489388928.

The previous prime is 101234656519. The next prime is 101234656547. The reversal of 101234656540 is 45656432101.

101234656540 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 101234656540.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101234656547) 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, 90945 + ... + 459064.

It is an arithmetic number, because the mean of its divisors is an integer number (8859011070).

Almost surely, 2^101234656540 is an apocalyptic number.

101234656540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101234656540 is an abundant number, since it is smaller than the sum of its proper divisors (111381609140).

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

101234656540 is a wasteful number, since it uses less digits than its factorization.

101234656540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 559221 (or 559219 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 37.

The spelling of 101234656540 in words is "one hundred one billion, two hundred thirty-four million, six hundred fifty-six thousand, five hundred forty".