61245203902 has 8 divisors (see below), whose sum is σ = 91879156512. Its totient is φ = 30618818400.

The previous prime is 61245203891. The next prime is 61245203911. The reversal of 61245203902 is 20930254216.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1871499 + ... + 1903942.

It is an arithmetic number, because the mean of its divisors is an integer number (11484894564).

Almost surely, 2^61245203902 is an apocalyptic number.

61245203902 is a deficient number, since it is larger than the sum of its proper divisors (30633952610).

61245203902 is a wasteful number, since it uses less digits than its factorization.

61245203902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3783554.

The product of its (nonzero) digits is 25920, while the sum is 34.

The spelling of 61245203902 in words is "sixty-one billion, two hundred forty-five million, two hundred three thousand, nine hundred two".