61154234402 has 32 divisors (see below), whose sum is σ = 99885704688. Its totient is φ = 27963242496.

The previous prime is 61154234357. The next prime is 61154234417. The reversal of 61154234402 is 20443245116.

It can be written as a sum of positive squares in 8 ways, for example, as 48646272481 + 12507961921 = 220559^2 + 111839^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 920198 + ... + 984414.

Almost surely, 2^61154234402 is an apocalyptic number.

61154234402 is a deficient number, since it is larger than the sum of its proper divisors (38731470286).

61154234402 is a wasteful number, since it uses less digits than its factorization.

61154234402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65030.

The product of its (nonzero) digits is 23040, while the sum is 32.

Adding to 61154234402 its reverse (20443245116), we get a palindrome (81597479518).

The spelling of 61154234402 in words is "sixty-one billion, one hundred fifty-four million, two hundred thirty-four thousand, four hundred two".