11215410978 has 16 divisors (see below), whose sum is σ = 22435012800. Its totient is φ = 3737771856.

The previous prime is 11215410977. The next prime is 11215410979. The reversal of 11215410978 is 87901451211.

It is an interprime number because it is at equal distance from previous prime (11215410977) and next prime (11215410979).

It is not an unprimeable number, because it can be changed into a prime (11215410977) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 139278 + ... + 204521.

It is an arithmetic number, because the mean of its divisors is an integer number (1402188300).

Almost surely, 2^11215410978 is an apocalyptic number.

11215410978 is an abundant number, since it is smaller than the sum of its proper divisors (11219601822).

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

11215410978 is a wasteful number, since it uses less digits than its factorization.

11215410978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 349241.

The product of its (nonzero) digits is 20160, while the sum is 39.

The spelling of 11215410978 in words is "eleven billion, two hundred fifteen million, four hundred ten thousand, nine hundred seventy-eight".