7021181952 has 88 divisors (see below), whose sum is σ = 20793426000. Its totient is φ = 2340384768.

The previous prime is 7021181927. The next prime is 7021181957. The reversal of 7021181952 is 2591811207.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7021181957) 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, 99327 + ... + 154622.

Almost surely, 2^7021181952 is an apocalyptic number.

7021181952 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

7021181952 is an abundant number, since it is smaller than the sum of its proper divisors (13772244048).

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

7021181952 is a wasteful number, since it uses less digits than its factorization.

7021181952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253978 (or 253954 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 36.

The square root of 7021181952 is about 83792.4934108062. The cubic root of 7021181952 is about 1914.8587453614.

The spelling of 7021181952 in words is "seven billion, twenty-one million, one hundred eighty-one thousand, nine hundred fifty-two".