103779978201 has 27 divisors (see below), whose sum is σ = 152089419807. Its totient is φ = 68192500320.

The previous prime is 103779978163. The next prime is 103779978227. The reversal of 103779978201 is 102879977301.

The square root of 103779978201 is 322149.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 58910571225 + 44869406976 = 242715^2 + 211824^2 .

It is not a de Polignac number, because 103779978201 - 2²¹ = 103777881049 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (103779978271) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 70549896 + ... + 70551366.

Almost surely, 2^103779978201 is an apocalyptic number.

103779978201 is the 322149-th square number.

103779978201 is the 161075-th centered octagonal number.

It is an amenable number.

103779978201 is a deficient number, since it is larger than the sum of its proper divisors (48309441606).

103779978201 is an frugal number, since it uses more digits than its factorization.

103779978201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3094 (or 1547 counting only the distinct ones).

The product of its (nonzero) digits is 1333584, while the sum is 54.

The spelling of 103779978201 in words is "one hundred three billion, seven hundred seventy-nine million, nine hundred seventy-eight thousand, two hundred one".