61091486098373 has 4 divisors (see below), whose sum is σ = 61093019982540. Its totient is φ = 61089952214208.

The previous prime is 61091486098369. The next prime is 61091486098399. The reversal of 61091486098373 is 37389068419016.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 25535810570209 + 35555675528164 = 5053297^2 + 5962858^2 .

It is a cyclic number.

It is not a de Polignac number, because 61091486098373 - 2² = 61091486098369 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61091486098073) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 766882340 + ... + 766961997.

It is an arithmetic number, because the mean of its divisors is an integer number (15273254995635).

Almost surely, 2^{61091486098373} is an apocalyptic number.

It is an amenable number.

61091486098373 is a deficient number, since it is larger than the sum of its proper divisors (1533884167).

61091486098373 is a wasteful number, since it uses less digits than its factorization.

61091486098373 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1533884166.

The product of its (nonzero) digits is 47029248, while the sum is 65.

The spelling of 61091486098373 in words is "sixty-one trillion, ninety-one billion, four hundred eighty-six million, ninety-eight thousand, three hundred seventy-three".