61903973378 has 16 divisors (see below), whose sum is σ = 105261817920. Its totient is φ = 27067324176.

The previous prime is 61903973317. The next prime is 61903973381. The reversal of 61903973378 is 87337930916.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62655350 + ... + 62656337.

It is an arithmetic number, because the mean of its divisors is an integer number (6578863620).

Almost surely, 2^61903973378 is an apocalyptic number.

61903973378 is a deficient number, since it is larger than the sum of its proper divisors (43357844542).

61903973378 is a wasteful number, since it uses less digits than its factorization.

61903973378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125311721.

The product of its (nonzero) digits is 5143824, while the sum is 56.

The spelling of 61903973378 in words is "sixty-one billion, nine hundred three million, nine hundred seventy-three thousand, three hundred seventy-eight".