101240445551 has 16 divisors (see below), whose sum is σ = 118214138880. Its totient is φ = 84895977120.

The previous prime is 101240445517. The next prime is 101240445589. The reversal of 101240445551 is 155544042101.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 101240445551 - 2²² = 101236251247 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101240475551) 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, 746441 + ... + 871581.

It is an arithmetic number, because the mean of its divisors is an integer number (7388383680).

Almost surely, 2^101240445551 is an apocalyptic number.

101240445551 is a deficient number, since it is larger than the sum of its proper divisors (16973693329).

101240445551 is a wasteful number, since it uses less digits than its factorization.

101240445551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127654.

The product of its (nonzero) digits is 16000, while the sum is 32.

Adding to 101240445551 its reverse (155544042101), we get a palindrome (256784487652).

The spelling of 101240445551 in words is "one hundred one billion, two hundred forty million, four hundred forty-five thousand, five hundred fifty-one".