511004891494 has 16 divisors (see below), whose sum is σ = 799931135232. Its totient is φ = 244363885128.

The previous prime is 511004891489. The next prime is 511004891497. The reversal of 511004891494 is 494198400115.

It is a happy number.

It is a super-2 number, since 2×511004891494² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (511004891497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 292104 + ... + 1052299.

It is an arithmetic number, because the mean of its divisors is an integer number (49995695952).

Almost surely, 2^511004891494 is an apocalyptic number.

511004891494 is a deficient number, since it is larger than the sum of its proper divisors (288926243738).

511004891494 is a wasteful number, since it uses less digits than its factorization.

511004891494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1352691.

The product of its (nonzero) digits is 207360, while the sum is 46.

The spelling of 511004891494 in words is "five hundred eleven billion, four million, eight hundred ninety-one thousand, four hundred ninety-four".