61646654542454 has 16 divisors (see below), whose sum is σ = 96004635246720. Its totient is φ = 29656604268480.

The previous prime is 61646654542433. The next prime is 61646654542631. The reversal of 61646654542454 is 45424545664616.

It is a Harshad number since it is a multiple of its sum of digits (62).

It is a congruent number.

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, 2873691239 + ... + 2873712690.

It is an arithmetic number, because the mean of its divisors is an integer number (6000289702920).

Almost surely, 2^{61646654542454} is an apocalyptic number.

61646654542454 is a deficient number, since it is larger than the sum of its proper divisors (34357980704266).

61646654542454 is a wasteful number, since it uses less digits than its factorization.

61646654542454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5747404135.

The product of its digits is 331776000, while the sum is 62.

The spelling of 61646654542454 in words is "sixty-one trillion, six hundred forty-six billion, six hundred fifty-four million, five hundred forty-two thousand, four hundred fifty-four".