6211797978 has 32 divisors (see below), whose sum is σ = 12504360960. Its totient is φ = 2057160240.

The previous prime is 6211797973. The next prime is 6211797983. The reversal of 6211797978 is 8797971126.

It is an interprime number because it is at equal distance from previous prime (6211797973) and next prime (6211797983).

It is not an unprimeable number, because it can be changed into a prime (6211797973) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1681113 + ... + 1684803.

It is an arithmetic number, because the mean of its divisors is an integer number (390761280).

Almost surely, 2^6211797978 is an apocalyptic number.

6211797978 is an abundant number, since it is smaller than the sum of its proper divisors (6292562982).

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

6211797978 is a wasteful number, since it uses less digits than its factorization.

6211797978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5442.

The product of its digits is 2667168, while the sum is 57.

The square root of 6211797978 is about 78814.9603692091. The cubic root of 6211797978 is about 1838.2550780046.

The spelling of 6211797978 in words is "six billion, two hundred eleven million, seven hundred ninety-seven thousand, nine hundred seventy-eight".