2720531978901 has 16 divisors (see below), whose sum is σ = 4396819360320. Its totient is φ = 1648807259760.

The previous prime is 2720531978873. The next prime is 2720531978911. The reversal of 2720531978901 is 1098791350272.

It is a happy number.

2720531978901 is a `hidden beast` number, since 2 + 7 + 20 + 531 + 9 + 7 + 89 + 0 + 1 = 666.

It is not a de Polignac number, because 2720531978901 - 2¹¹ = 2720531976853 is a prime.

It is a super-2 number, since 2×2720531978901² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2720531978911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4580019870 + ... + 4580020463.

It is an arithmetic number, because the mean of its divisors is an integer number (274801210020).

Almost surely, 2^{2720531978901} is an apocalyptic number.

It is an amenable number.

2720531978901 is a deficient number, since it is larger than the sum of its proper divisors (1676287381419).

2720531978901 is a wasteful number, since it uses less digits than its factorization.

2720531978901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9160040353 (or 9160040347 counting only the distinct ones).

The product of its (nonzero) digits is 1905120, while the sum is 54.

The spelling of 2720531978901 in words is "two trillion, seven hundred twenty billion, five hundred thirty-one million, nine hundred seventy-eight thousand, nine hundred one".