202742406811 has 12 divisors (see below), whose sum is σ = 235980185592. Its totient is φ = 173678275008.

The previous prime is 202742406803. The next prime is 202742406869. The reversal of 202742406811 is 118604247202.

It is not a de Polignac number, because 202742406811 - 2³ = 202742406803 is a prime.

It is a super-2 number, since 2×202742406811² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (202742407811) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1116270 + ... + 1285123.

It is an arithmetic number, because the mean of its divisors is an integer number (19665015466).

Almost surely, 2^202742406811 is an apocalyptic number.

202742406811 is a deficient number, since it is larger than the sum of its proper divisors (33237778781).

202742406811 is a wasteful number, since it uses less digits than its factorization.

202742406811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2403130 (or 2403123 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 37.

The spelling of 202742406811 in words is "two hundred two billion, seven hundred forty-two million, four hundred six thousand, eight hundred eleven".