61026838444 has 72 divisors (see below), whose sum is σ = 128952090288. Its totient is φ = 24913301760.

The previous prime is 61026838429. The next prime is 61026838447. The reversal of 61026838444 is 44483862016.

It is a happy number.

It is a super-2 number, since 2×61026838444² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 61026838394 and 61026838403.

It is not an unprimeable number, because it can be changed into a prime (61026838447) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 744102 + ... + 822034.

It is an arithmetic number, because the mean of its divisors is an integer number (1791001254).

Almost surely, 2^61026838444 is an apocalyptic number.

It is an amenable number.

61026838444 is an abundant number, since it is smaller than the sum of its proper divisors (67925251844).

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

61026838444 is a wasteful number, since it uses less digits than its factorization.

61026838444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78035 (or 77996 counting only the distinct ones).

The product of its (nonzero) digits is 884736, while the sum is 46.

The spelling of 61026838444 in words is "sixty-one billion, twenty-six million, eight hundred thirty-eight thousand, four hundred forty-four".