61348926931 has 16 divisors (see below), whose sum is σ = 65057580000. Its totient is φ = 57748499200.

The previous prime is 61348926887. The next prime is 61348926937. The reversal of 61348926931 is 13962984316.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 61348926931 - 2⁷ = 61348926803 is a prime.

It is a super-2 number, since 2×61348926931² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61348926937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1765101 + ... + 1799521.

It is an arithmetic number, because the mean of its divisors is an integer number (4066098750).

Almost surely, 2^61348926931 is an apocalyptic number.

61348926931 is a deficient number, since it is larger than the sum of its proper divisors (3708653069).

61348926931 is a wasteful number, since it uses less digits than its factorization.

61348926931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35990.

The product of its digits is 1679616, while the sum is 52.

The spelling of 61348926931 in words is "sixty-one billion, three hundred forty-eight million, nine hundred twenty-six thousand, nine hundred thirty-one".