101620867720 has 16 divisors (see below), whose sum is σ = 228646952460. Its totient is φ = 40648347072.

The previous prime is 101620867583. The next prime is 101620867721. The reversal of 101620867720 is 27768026101.

101620867720 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 101619413284 + 1454436 = 318778^2 + 1206^2 .

It is a Harshad number since it is a multiple of its sum of digits (40), and also a Moran number because the ratio is a prime number: 2540521693 = 101620867720 / (1 + 0 + 1 + 6 + 2 + 0 + 8 + 6 + 7 + 7 + 2 + 0).

It is not an unprimeable number, because it can be changed into a prime (101620867721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1270260807 + ... + 1270260886.

Almost surely, 2^101620867720 is an apocalyptic number.

101620867720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101620867720 is an abundant number, since it is smaller than the sum of its proper divisors (127026084740).

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

101620867720 is a wasteful number, since it uses less digits than its factorization.

101620867720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2540521704 (or 2540521700 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 40.

The spelling of 101620867720 in words is "one hundred one billion, six hundred twenty million, eight hundred sixty-seven thousand, seven hundred twenty".