61671422402 has 6 divisors (see below), whose sum is σ = 92507660409. Its totient is φ = 30835535600.

The previous prime is 61671422401. The next prime is 61671422431. The reversal of 61671422402 is 20422417616.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 60649405441 + 1022016961 = 246271^2 + 31969^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=175601.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61671422401) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 263402 + ... + 439002.

Almost surely, 2^61671422402 is an apocalyptic number.

61671422402 is a deficient number, since it is larger than the sum of its proper divisors (30836238007).

61671422402 is an frugal number, since it uses more digits than its factorization.

61671422402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 351204 (or 175603 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 35.

The spelling of 61671422402 in words is "sixty-one billion, six hundred seventy-one million, four hundred twenty-two thousand, four hundred two".