101551620434061 has 16 divisors (see below), whose sum is σ = 154807799336064. Its totient is φ = 58006070030784.

The previous prime is 101551620434059. The next prime is 101551620434137. The reversal of 101551620434061 is 160434026155101.

It is not a de Polignac number, because 101551620434061 - 2¹ = 101551620434059 is a prime.

It is a super-2 number, since 2×101551620434061² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101551620434051) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 976086750 + ... + 976190783.

It is an arithmetic number, because the mean of its divisors is an integer number (9675487458504).

Almost surely, 2^{101551620434061} is an apocalyptic number.

It is an amenable number.

101551620434061 is a deficient number, since it is larger than the sum of its proper divisors (53256178902003).

101551620434061 is a wasteful number, since it uses less digits than its factorization.

101551620434061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1952280020.

The product of its (nonzero) digits is 86400, while the sum is 39.

Adding to 101551620434061 its reverse (160434026155101), we get a palindrome (261985646589162).

The spelling of 101551620434061 in words is "one hundred one trillion, five hundred fifty-one billion, six hundred twenty million, four hundred thirty-four thousand, sixty-one".