61026742606764 has 144 divisors (see below), whose sum is σ = 161928987897600. Its totient is φ = 17853697868160.

The previous prime is 61026742606763. The next prime is 61026742606811. The reversal of 61026742606764 is 46760624762016.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (61026742606763) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 532987929 + ... + 533102415.

It is an arithmetic number, because the mean of its divisors is an integer number (1124506860400).

Almost surely, 2^{61026742606764} 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 61026742606764, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80964493948800).

61026742606764 is an abundant number, since it is smaller than the sum of its proper divisors (100902245290836).

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

61026742606764 is a wasteful number, since it uses less digits than its factorization.

61026742606764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127204 (or 127191 counting only the distinct ones).

The product of its (nonzero) digits is 24385536, while the sum is 57.

The spelling of 61026742606764 in words is "sixty-one trillion, twenty-six billion, seven hundred forty-two million, six hundred six thousand, seven hundred sixty-four".