6461266136 has 48 divisors (see below), whose sum is σ = 13314457800. Its totient is φ = 2937572352.

The previous prime is 6461266079. The next prime is 6461266151. The reversal of 6461266136 is 6316621646.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 6461266093 and 6461266102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 54920 + ... + 126248.

Almost surely, 2^6461266136 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6461266136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6657228900).

6461266136 is an abundant number, since it is smaller than the sum of its proper divisors (6853191664).

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

6461266136 is a wasteful number, since it uses less digits than its factorization.

6461266136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71428 (or 71411 counting only the distinct ones).

The product of its digits is 186624, while the sum is 41.

The square root of 6461266136 is about 80382.0013187032. The cubic root of 6461266136 is about 1862.5411499459.

The spelling of 6461266136 in words is "six billion, four hundred sixty-one million, two hundred sixty-six thousand, one hundred thirty-six".