2011215511240 has 64 divisors (see below), whose sum is σ = 5129820964800. Its totient is φ = 703518296832.

The previous prime is 2011215511237. The next prime is 2011215511271. The reversal of 2011215511240 is 421155121102.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 101772282 + ... + 101792041.

It is an arithmetic number, because the mean of its divisors is an integer number (80153452575).

Almost surely, 2^{2011215511240} is an apocalyptic number.

2011215511240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2011215511240 is an abundant number, since it is smaller than the sum of its proper divisors (3118605453560).

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

2011215511240 is a wasteful number, since it uses less digits than its factorization.

2011215511240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203564366 (or 203564362 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 25.

The spelling of 2011215511240 in words is "two trillion, eleven billion, two hundred fifteen million, five hundred eleven thousand, two hundred forty".