6121267780 has 48 divisors (see below), whose sum is σ = 13248829440. Its totient is φ = 2374386048.

The previous prime is 6121267777. The next prime is 6121267787. The reversal of 6121267780 is 877621216.

It is a super-2 number, since 2×6121267780² = 74939838468932256800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (6121267787) 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, 72589 + ... + 132331.

It is an arithmetic number, because the mean of its divisors is an integer number (276017280).

Almost surely, 2^6121267780 is an apocalyptic number.

It is an amenable number.

6121267780 is an abundant number, since it is smaller than the sum of its proper divisors (7127561660).

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

6121267780 is a wasteful number, since it uses less digits than its factorization.

6121267780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59908 (or 59906 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 40.

The square root of 6121267780 is about 78238.5313001209. The cubic root of 6121267780 is about 1829.2811513682.

Adding to 6121267780 its reverse (877621216), we get a palindrome (6998888996).

The spelling of 6121267780 in words is "six billion, one hundred twenty-one million, two hundred sixty-seven thousand, seven hundred eighty".