1621003532134 has 16 divisors (see below), whose sum is σ = 2796562967328. Its totient is φ = 690290857152.

The previous prime is 1621003532131. The next prime is 1621003532149. The reversal of 1621003532134 is 4312353001261.

It is a junction number, because it is equal to n+sod(n) for n = 1621003532096 and 1621003532105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1621003532131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 368742919 + ... + 368747314.

It is an arithmetic number, because the mean of its divisors is an integer number (174785185458).

Almost surely, 2^{1621003532134} is an apocalyptic number.

1621003532134 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1621003532134 is a deficient number, since it is larger than the sum of its proper divisors (1175559435194).

1621003532134 is a wasteful number, since it uses less digits than its factorization.

1621003532134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 737490399.

The product of its (nonzero) digits is 12960, while the sum is 31.

Adding to 1621003532134 its reverse (4312353001261), we get a palindrome (5933356533395).

The spelling of 1621003532134 in words is "one trillion, six hundred twenty-one billion, three million, five hundred thirty-two thousand, one hundred thirty-four".