61253816354 has 4 divisors (see below), whose sum is σ = 91880724534. Its totient is φ = 30626908176.

The previous prime is 61253816293. The next prime is 61253816369. The reversal of 61253816354 is 45361835216.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 61209234025 + 44582329 = 247405^2 + 6677^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15313454087 + ... + 15313454090.

Almost surely, 2^61253816354 is an apocalyptic number.

61253816354 is a deficient number, since it is larger than the sum of its proper divisors (30626908180).

61253816354 is a wasteful number, since it uses less digits than its factorization.

61253816354 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30626908179.

The product of its digits is 518400, while the sum is 44.

The spelling of 61253816354 in words is "sixty-one billion, two hundred fifty-three million, eight hundred sixteen thousand, three hundred fifty-four".