61026805281 has 16 divisors (see below), whose sum is σ = 87664985856. Its totient is φ = 37539206016.

The previous prime is 61026805193. The next prime is 61026805319. The reversal of 61026805281 is 18250862016.

61026805281 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 61026805281 - 2⁷ = 61026805153 is a prime.

It is a super-2 number, since 2×61026805281² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (61026885281) 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, 233625 + ... + 420278.

It is an arithmetic number, because the mean of its divisors is an integer number (5479061616).

Almost surely, 2^61026805281 is an apocalyptic number.

It is an amenable number.

61026805281 is a deficient number, since it is larger than the sum of its proper divisors (26638180575).

61026805281 is a wasteful number, since it uses less digits than its factorization.

61026805281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 656312.

The product of its (nonzero) digits is 46080, while the sum is 39.

The spelling of 61026805281 in words is "sixty-one billion, twenty-six million, eight hundred five thousand, two hundred eighty-one".