101002723280 has 40 divisors (see below), whose sum is σ = 239262121512. Its totient is φ = 39638802944.

The previous prime is 101002723279. The next prime is 101002723351. The reversal of 101002723280 is 82327200101.

It can be written as a sum of positive squares in 4 ways, for example, as 24890741824 + 76111981456 = 157768^2 + 275884^2 .

It is a tau number, because it is divible by the number of its divisors (40).

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, 11906459 + ... + 11914938.

Almost surely, 2^101002723280 is an apocalyptic number.

101002723280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101002723280 is an abundant number, since it is smaller than the sum of its proper divisors (138259398232).

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

101002723280 is a wasteful number, since it uses less digits than its factorization.

101002723280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23821463 (or 23821457 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 26.

Adding to 101002723280 its reverse (82327200101), we get a palindrome (183329923381).

The spelling of 101002723280 in words is "one hundred one billion, two million, seven hundred twenty-three thousand, two hundred eighty".