101287551840 has 48 divisors (see below), whose sum is σ = 319055789808. Its totient is φ = 27010013696.

The previous prime is 101287551817. The next prime is 101287551919. The reversal of 101287551840 is 48155782101.

It is a tau number, because it is divible by the number of its divisors (48).

It is a junction number, because it is equal to n+sod(n) for n = 101287551792 and 101287551801.

It is a congruent 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, 105507387 + ... + 105508346.

It is an arithmetic number, because the mean of its divisors is an integer number (6646995621).

Almost surely, 2^101287551840 is an apocalyptic number.

101287551840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101287551840 is an abundant number, since it is smaller than the sum of its proper divisors (217768237968).

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

101287551840 is a wasteful number, since it uses less digits than its factorization.

101287551840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211015751 (or 211015743 counting only the distinct ones).

The product of its (nonzero) digits is 89600, while the sum is 42.

The spelling of 101287551840 in words is "one hundred one billion, two hundred eighty-seven million, five hundred fifty-one thousand, eight hundred forty".