101620154066542 has 16 divisors (see below), whose sum is σ = 155674493153280. Its totient is φ = 49728671149528.

The previous prime is 101620154066531. The next prime is 101620154066569. The reversal of 101620154066542 is 245660451026101.

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, 10388559 + ... + 17639797.

It is an arithmetic number, because the mean of its divisors is an integer number (9729655822080).

Almost surely, 2^{101620154066542} is an apocalyptic number.

101620154066542 is a deficient number, since it is larger than the sum of its proper divisors (54054339086738).

101620154066542 is a wasteful number, since it uses less digits than its factorization.

101620154066542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7400375.

The product of its (nonzero) digits is 345600, while the sum is 43.

The spelling of 101620154066542 in words is "one hundred one trillion, six hundred twenty billion, one hundred fifty-four million, sixty-six thousand, five hundred forty-two".