61687301543494 has 32 divisors (see below), whose sum is σ = 104428127197440. Its totient is φ = 27071634928800.

The previous prime is 61687301543479. The next prime is 61687301543519. The reversal of 61687301543494 is 49434510378616.

It is a congruent number.

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, 12885717 + ... + 17012239.

It is an arithmetic number, because the mean of its divisors is an integer number (3263378974920).

Almost surely, 2^{61687301543494} is an apocalyptic number.

61687301543494 is a deficient number, since it is larger than the sum of its proper divisors (42740825653946).

61687301543494 is a wasteful number, since it uses less digits than its factorization.

61687301543494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4149996.

The product of its (nonzero) digits is 52254720, while the sum is 61.

The spelling of 61687301543494 in words is "sixty-one trillion, six hundred eighty-seven billion, three hundred one million, five hundred forty-three thousand, four hundred ninety-four".