213961772248 has 32 divisors (see below), whose sum is σ = 464947119360. Its totient is φ = 90406380960.

The previous prime is 213961772231. The next prime is 213961772249. The reversal of 213961772248 is 842277169312.

It is a junction number, because it is equal to n+sod(n) for n = 213961772195 and 213961772204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213961772249) 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, 26902686 + ... + 26910637.

It is an arithmetic number, because the mean of its divisors is an integer number (14529597480).

Almost surely, 2^213961772248 is an apocalyptic number.

213961772248 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

213961772248 is an abundant number, since it is smaller than the sum of its proper divisors (250985347112).

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

213961772248 is a wasteful number, since it uses less digits than its factorization.

213961772248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53813407 (or 53813403 counting only the distinct ones).

The product of its digits is 2032128, while the sum is 52.

The spelling of 213961772248 in words is "two hundred thirteen billion, nine hundred sixty-one million, seven hundred seventy-two thousand, two hundred forty-eight".