1023159157554 has 8 divisors (see below), whose sum is σ = 2046318315120. Its totient is φ = 341053052516.

The previous prime is 1023159157483. The next prime is 1023159157561. The reversal of 1023159157554 is 4557519513201.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

1023159157554 is an admirable number.

It is a super-2 number, since 2×1023159157554² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85263263124 + ... + 85263263135.

It is an arithmetic number, because the mean of its divisors is an integer number (255789789390).

Almost surely, 2^{1023159157554} is an apocalyptic number.

1023159157554 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1023159157554 is a wasteful number, since it uses less digits than its factorization.

1023159157554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170526526264.

The product of its (nonzero) digits is 945000, while the sum is 48.

The spelling of 1023159157554 in words is "one trillion, twenty-three billion, one hundred fifty-nine million, one hundred fifty-seven thousand, five hundred fifty-four".